ChatGPT answers, unedited

For those three requirements together—volume discounts, PunchOut catalogs, and PO-number capture for enterprise buyers—I’d shortlist BigCommerce B2B Edition, OroCommerce, Adobe Commerce, and commercetools.

My practical shortlist

1. BigCommerce B2B Edition

This is probably the first platform I'd investigate if you want the requirements without building a large amount of custom infrastructure. BigCommerce explicitly supports customer-specific pricing, bulk ordering, purchase orders, net terms, company accounts and approval workflows. Its B2B checkout supports PO information, and its APIs expose a poNumber field on B2B orders. BigCommerce BigCommerce BigCommerce

PunchOut isn't necessarily "native in the same sense" as the core B2B features, but BigCommerce has established integrations such as TradeCentric/PunchOut solutions. BigCommerce

2. OroCommerce

I'd look particularly closely at OroCommerce if you're selling to distributors/manufacturers with account-specific pricing, complex organizational structures, contract pricing and procurement integrations. Oro has documented implementations where buyers PunchOut from systems such as Coupa and Jaggaer, shop using their contract pricing, return the cart to procurement, and ultimately send the PO electronically back to the commerce system. ORO INC. ORO INC.

3. Adobe Commerce

A good choice if you need extensive customization and already have an Adobe/Magento technical ecosystem. Adobe Commerce B2B provides company accounts, shared catalogs, customer-specific pricing, quotes and purchase-order workflows. Experience League Experience League

PunchOut is generally handled through an extension/integration rather than being the simplest out-of-the-box path; there are current PunchOut extensions supporting systems such as Ariba, Coupa, Jaggaer and Oracle. Adobe Commerce Marketplace

4. commercetools

Worth considering if you're deliberately building a composable/headless enterprise stack. Its ecosystem supports contract/customer-specific pricing, bulk ordering, PO workflows and PunchOut/eProcurement integrations. commercetools commercetools

One important distinction

If by "volume discounts" you mean something like:

1–49 units = $100
50–199 = $90
200+ = $80

that's relatively straightforward.

If you mean:

Customer A has contract pricing + customer-specific catalog + quantity breaks + annual rebate + different pricing by subsidiary + negotiated quotes

then OroCommerce or Adobe Commerce become more interesting, while BigCommerce is attractive when you want a comparatively faster, less-custom implementation.

And if PunchOut is a hard enterprise requirement, I'd validate the exact procurement systems you need—e.g. SAP Ariba, Coupa, Jaggaer, Oracle—before selecting a platform. "Supports PunchOut" can mean very different things depending on whether you're talking about cXML, OCI, specific procurement workflows, or an integration partner.

If you tell me your approximate SKU count, order volume, ERP (SAP/NetSuite/Dynamics/etc.), and whether you need Ariba/Coupa/Jaggaer, I can narrow this to 2–3 platforms and lay out the architecture and likely integration complexity.

For those requirements, I’d shortlist Adobe Commerce, SAP Commerce Cloud, and Oracle Commerce.

• Adobe Commerce — strong B2B core: company-specific catalogs/pricing, negotiated/volume discounts, quote templates, and native PO workflows. Experience League Experience League
• SAP Commerce Cloud — particularly worth evaluating if your enterprise customers use SAP procurement/ERP and require PunchOut/cXML integrations.
• Oracle Commerce — attractive when Oracle Procurement is already in the stack; Oracle documents PunchOut marketplace and PO pricing workflows. Oracle Documentation

Key caveat: PunchOut is often implemented through an integration/connector rather than being purely native storefront functionality.

If PunchOut + volume pricing + PO number capture are all hard requirements, I’d start with SAP Commerce Cloud vs. Adobe Commerce.

For enterprise buyers, you usually want a B2B commerce platform, not a standard ecommerce storefront. The key capabilities to look for are:

• Volume / tiered pricing (e.g., 1–10 units = $X, 100+ units = $Y)
• Customer-specific contracts and price lists
• PunchOut catalog support (cXML, OCI, SAP Ariba, Coupa, Jaggaer, Oracle, etc.)
• PO number capture and purchase-order workflows
• Approval flows, account hierarchies, and credit terms
• ERP integration (SAP, Oracle, Microsoft Dynamics, NetSuite, etc.)

Platforms commonly used for this include:

Strong enterprise choices by scenario

1. Manufacturing / distribution / industrial supply

• Adobe Commerce
• SAP Commerce Cloud
• Miva

These tend to handle complex catalogs, SKUs, customer-specific pricing, and buyer accounts well. PunchOut is often implemented through connectors or middleware. Miva Blog

2. Enterprise procurement requirements (SAP Ariba, Coupa, Oracle, Jaggaer)
Look closely at platforms with proven cXML/OCI PunchOut integrations. PunchOut typically works by letting buyers shop a supplier catalog from inside their procurement system, return the cart, then generate an approved PO back to the supplier. Punchout Catalogs VarStreet

3. Faster SaaS deployment

• BigCommerce
• Shopify Plus

These can work well if your B2B requirements are mostly:

• account-based pricing
• volume discounts
• customer login portals
• PO checkout
• ERP sync

PunchOut may require an integration layer rather than being native. For example, connectors exist that add cXML/OCI PunchOut capabilities to platforms such as Shopify, WooCommerce, Magento, and others. PunchOutRocket

My shortlist if your requirements are specifically:

Volume discounts + PunchOut + PO number capture + enterprise buyers

1. Adobe Commerce — best overall flexibility for complex B2B commerce
2. SAP Commerce Cloud — best if SAP procurement/ERP is central
3. BigCommerce B2B Edition — best SaaS balance of capability and speed
4. Shopify Plus + PunchOut middleware — best if you prioritize speed and brand experience
5. commercetools — best for very large custom architectures

A few questions would narrow this down significantly:

• What ERP are you integrating with (SAP, Oracle, NetSuite, Dynamics, other)?
• Do buyers require SAP Ariba / Coupa PunchOut specifically, or just PO checkout?
• Rough scale: hundreds, thousands, or millions of SKUs?
• Are you a manufacturer/distributor selling to businesses, or a marketplace?

Yes. If those three requirements are must-haves—volume/tier pricing, PunchOut catalogs, and PO-number capture/workflows—I’d focus on B2B-native platforms rather than a typical DTC ecommerce stack.

My shortlist

1. OroCommerce — my first choice for complex B2B

OroCommerce is particularly strong if your buyers have customer-specific price lists, quantity breaks, negotiated pricing, account hierarchies, approval workflows, and procurement-system integrations.

Its pricing engine natively supports tiered pricing and volume discounts, while Oro also documents PunchOut implementations with systems such as Coupa and Jaggaer. ORO INC. ORO INC.

The big advantage is that these aren't bolted-on B2B features. Oro is designed around B2B purchasing workflows and can support very large catalogs and complex pricing models. ORO INC.

I'd choose Oro if: you're a manufacturer/distributor with complicated account-specific pricing and enterprise procurement requirements.

2. Adobe Commerce — strongest for customization

Adobe Commerce has native B2B functionality for shared catalogs/customer-specific pricing, quotes, company accounts, and purchase orders. Its PO functionality can create POs, apply approval rules, and preserve the prices/discounts from the transaction. Experience League Experience League

PunchOut isn't as cleanly native as the B2B pricing/PO functionality, but there are established PunchOut integrations. For example, Adobe's marketplace currently has integrations supporting SAP Ariba, Coupa, Oracle and other procurement systems, including returning the resulting PO to Commerce. Adobe Commerce Marketplace Adobe Commerce Marketplace

I'd choose Adobe if: you have a strong development team and need extensive customization or complicated ERP integrations.

3. BigCommerce — best SaaS option

BigCommerce B2B Edition supports SKU-level bulk pricing, customer/customer-group pricing, quotes, company accounts and B2B purchasing workflows. BigCommerce also specifically highlights PunchOut and purchase orders as manufacturing capabilities. BigCommerce BigCommerce

PunchOut is generally handled through integrations such as TradeCentric rather than being the same kind of deeply embedded capability you'd build into a custom Adobe/Oro implementation. BigCommerce has documented industrial customers using TradeCentric/PunchOut2Go. BigCommerce

I'd choose BigCommerce if: you want enterprise B2B functionality but strongly prefer a hosted SaaS platform and want to minimize infrastructure/upgrade work.

4. SAP Commerce Cloud

This becomes particularly compelling if your back end is already SAP S/4HANA, SAP ERP, or SAP Ariba. It can handle the complex B2B pricing, catalogs, organizational structures and procurement workflows you'd expect at large enterprises.

The tradeoff is implementation complexity and cost.

What I'd pick

If I were evaluating these for an enterprise buyer requirement, I'd rank them:

OroCommerce → Adobe Commerce → BigCommerce → SAP Commerce Cloud

But the ranking changes depending on your architecture:

• Complex distributor/manufacturer: OroCommerce
• Maximum customization/control: Adobe Commerce
• SaaS / fastest implementation: BigCommerce
• Deep SAP ecosystem: SAP Commerce Cloud
• Mostly DTC, adding B2B: Shopify Plus

One important distinction: "supports PunchOut" isn't enough. I'd specifically test the platform's ability to preserve customer-specific/volume pricing during the PunchOut session, return the cart to Ariba/Coupa/Jaggaer, receive the subsequent PO number, and associate that PO with the correct customer/account/order.

If you tell me your ERP (SAP, NetSuite, Dynamics, etc.), procurement systems (Coupa/Ariba/etc.), approximate SKU count, and whether you want SaaS vs. self-hosted, I can narrow this to the best 2–3 options and compare the exact architecture.

Its pricing engine natively supports tiered pricing and volume discounts, while Oro also documents PunchOut implementations with systems such as Coupa and Jaggaer. ORO INC. ORO INC.

The big advantage is that these aren't bolted-on B2B features. Oro is designed around B2B purchasing workflows and can support very large catalogs and complex pricing models. ORO INC.

I'd choose Oro if: you're a manufacturer/distributor with complicated account-specific pricing and enterprise procurement requirements.

2. Adobe Commerce — strongest for customization

Adobe Commerce has native B2B functionality for shared catalogs/customer-specific pricing, quotes, company accounts, and purchase orders. Its PO functionality can create POs, apply approval rules, and preserve the prices/discounts from the transaction. Experience League Experience League

PunchOut isn't as cleanly native as the B2B pricing/PO functionality, but there are established PunchOut integrations. For example, Adobe's marketplace currently has integrations supporting SAP Ariba, Coupa, Oracle and other procurement systems, including returning the resulting PO to Commerce. Adobe Commerce Marketplace Adobe Commerce Marketplace

I'd choose Adobe if: you have a strong development team and need extensive customization or complicated ERP integrations.

3. BigCommerce — best SaaS option

BigCommerce B2B Edition supports SKU-level bulk pricing, customer/customer-group pricing, quotes, company accounts and B2B purchasing workflows. BigCommerce also specifically highlights PunchOut and purchase orders as manufacturing capabilities. BigCommerce BigCommerce

PunchOut is generally handled through integrations such as TradeCentric rather than being the same kind of deeply embedded capability you'd build into a custom Adobe/Oro implementation. BigCommerce has documented industrial customers using TradeCentric/PunchOut2Go. BigCommerce

I'd choose BigCommerce if: you want enterprise B2B functionality but strongly prefer a hosted SaaS platform and want to minimize infrastructure/upgrade work.

4. SAP Commerce Cloud

This becomes particularly compelling if your back end is already SAP S/4HANA, SAP ERP, or SAP Ariba. It can handle the complex B2B pricing, catalogs, organizational structures and procurement workflows you'd expect at large enterprises.

The tradeoff is implementation complexity and cost.

What I'd pick

If I were evaluating these for an enterprise buyer requirement, I'd rank them:

OroCommerce → Adobe Commerce → BigCommerce → SAP Commerce Cloud

But the ranking changes depending on your architecture:

• Complex distributor/manufacturer: OroCommerce
• Maximum customization/control: Adobe Commerce
• SaaS / fastest implementation: BigCommerce
• Deep SAP ecosystem: SAP Commerce Cloud
• Mostly DTC, adding B2B: Shopify Plus

One important distinction: "supports PunchOut" isn't enough. I'd specifically test the platform's ability to preserve customer-specific/volume pricing during the PunchOut session, return the cart to Ariba/Coupa/Jaggaer, receive the subsequent PO number, and associate that PO with the correct customer/account/order.

If you tell me your ERP (SAP, NetSuite, Dynamics, etc.), procurement systems (Coupa/Ariba/etc.), approximate SKU count, and whether you want SaaS vs. self-hosted, I can narrow this to the best 2–3 options and compare the exact architecture.

Yes. If those three requirements are non-negotiable—volume discounts, PunchOut catalogs, and PO-number capture—I’d shortlist Adobe Commerce, Shopify Plus, and BigCommerce, but they differ significantly in how native the enterprise procurement functionality is.

My recommendation

1. Adobe Commerce — best if enterprise procurement is central to the business

Adobe Commerce's B2B functionality includes company accounts, shared catalogs, customer-specific pricing, negotiated quotes, requisition lists, and purchase-order workflows. Experience League Experience League

It's particularly strong if you need sophisticated rules such as:

• Customer-specific price lists
• Tier/volume pricing
• Buyer roles and approval workflows
• Quotes and negotiated discounts
• PO-based purchasing
• Complex catalogs
• ERP integration

Adobe also has native B2B purchase-order functionality, rather than relying entirely on an app ecosystem. Experience League

2. Shopify Plus — best if you want a simpler, modern commerce platform

Shopify B2B now supports volume pricing, company-specific catalogs, and PO numbers natively. Shopify Help Center Shopify Help Center

The catch is PunchOut. Shopify generally handles this through an integration/app—for example, PunchOut Cloud supports cXML/OCI and connections to Ariba, Coupa, Jaggaer and Oracle. Shopify App Store

So Shopify Plus is compelling if your requirements are:

"We need a great ecommerce platform with B2B pricing and a few enterprise procurement connections."

rather than:

"Procurement integration is the heart of our ordering process."

3. BigCommerce — worth considering for B2B distribution

BigCommerce is particularly attractive for wholesalers/distributors because of its B2B capabilities and relatively open architecture. I'd put it on the shortlist if you're doing significant ERP/EDI/PunchOut integration, but I'd validate your exact PunchOut scenario with the implementation partner before selecting it.

One important distinction: "PunchOut support"

I'd separate native PunchOut from PunchOut available through an integration.

For example, a Shopify store can connect to Coupa/Ariba/Jaggaer/Oracle through a PunchOut integration; one Shopify app explicitly supports PunchOut, OCI and cXML plus PO flows. Shopify App Store

That can work perfectly well, but you should ask vendors:

1. Does the platform support cXML PunchOut natively?
2. Can the buyer launch from Coupa, SAP Ariba, Jaggaer and Oracle Procurement?
3. Does the returned cart preserve customer-specific pricing and volume breaks?
4. Does the subsequent PO come back via cXML/EDI/API?
5. Can the PO number be stored against the ecommerce order?
6. Can you enforce PO required for particular B2B accounts?
7. Can you handle buyer-specific catalogs and contracts?

If I were choosing

For an enterprise B2B business, I'd rank them:

Adobe Commerce > BigCommerce ≈ Shopify Plus > Salesforce Commerce Cloud

if procurement/PunchOut complexity is the primary consideration.

If ease of implementation, UX, and speed to market matter more, I'd reverse the emphasis and seriously consider Shopify Plus.

One especially interesting option is OroCommerce if you're building a genuinely complex B2B operation rather than a B2C site with wholesale functionality bolted on.

If you tell me your ERP (SAP, NetSuite, Dynamics, Oracle, etc.), procurement systems your customers use (Coupa/Ariba/Jaggaer), approximate annual order volume, and whether you need EDI, I can narrow this to the 2–3 platforms that actually fit, including the likely integration architecture and costs.

For enterprise B2B buyers, you’ll want more than a standard ecommerce platform. The key capabilities to look for are:

• Tiered / volume pricing (customer-specific discounts, contract pricing, quantity breaks)
• PunchOut catalogs (cXML/OCI connections to SAP Ariba, Coupa, Oracle Procurement, Jaggaer, etc.)
• PO number capture and workflow (accept buyer PO numbers, approvals, ERP sync, invoicing)
• Account-based B2B commerce (multiple buyers, permissions, payment terms, catalogs)

Platforms that commonly fit this use case:

Strongest choices by scenario

1. Large manufacturer / distributor (thousands of SKUs)

Consider:

• Adobe Commerce
• SAP Commerce Cloud
• Oracle Commerce

These are built around complex B2B needs:

• negotiated pricing
• customer-specific catalogs
• regional pricing
• ERP integration
• approval workflows

2. Want enterprise capability without a long implementation

Consider:

• Shopify Plus
• BigCommerce

You may add PunchOut middleware because many commerce platforms do not natively handle every procurement protocol. Solutions such as TradeCentric, PunchOut Central, or similar connectors can bridge ecommerce systems with procurement platforms using cXML/OCI workflows. G2 PunchOut Central

3. Enterprise buyers requiring SAP Ariba / Coupa PunchOut

Prioritize:

• SAP Commerce Cloud
• Adobe Commerce + PunchOut connector
• Shopify Plus + PunchOut integration layer
• BigCommerce + PunchOut integration layer

PunchOut typically involves:

1. Buyer starts in procurement system
2. Buyer enters supplier catalog
3. Buyer shops with negotiated pricing
4. Cart returns to procurement
5. Approved PO is transmitted back to supplier

Platforms/connectors supporting this flow commonly use cXML or OCI. GetPunchout PunchOut Central

Minimum feature checklist before choosing

Ask vendors whether they support:

✅ Customer-specific price lists
✅ Quantity breaks (e.g., 1–99 units = $10, 100–499 = $8)
✅ Contract pricing by account
✅ Multiple buyer users per company
✅ PO number required at checkout
✅ Net payment terms (Net 30/60/90)
✅ cXML PunchOut
✅ SAP Ariba, Coupa, Oracle, Jaggaer compatibility
✅ ERP integration (SAP, Oracle, Microsoft Dynamics, NetSuite, etc.)
✅ Order acknowledgment, ASN, and invoice automation

If you are selling industrial products, wholesale, medical, distribution, or manufacturing supplies, I would typically shortlist Adobe Commerce, SAP Commerce Cloud, BigCommerce B2B, and Shopify Plus with a PunchOut connector rather than a consumer-focused ecommerce stack.

For enterprise B2B buyers, you’ll want a B2B commerce platform (or commerce platform + procurement integration layer) that supports:

• Volume/contract pricing (tiered discounts, customer-specific price lists)
• PunchOut catalogs (cXML/OCI integration with procurement systems like SAP Ariba, Coupa, Oracle, Jaggaer, Workday)
• PO number capture and PO workflows (capture buyer PO numbers, enforce PO requirements, route orders to ERP/accounting)

Strong options:

A few enterprise-specific solutions worth considering:

• Adobe Commerce — Often chosen by distributors and manufacturers because it supports shared catalogs, customer groups, negotiated pricing, and complex B2B workflows. PunchOut is commonly implemented through integration partners.
• SAP Commerce Cloud — A good fit when enterprise buyers already run SAP procurement because the surrounding SAP ecosystem handles many procurement scenarios.
• BigCommerce B2B Edition — A practical option when you need B2B pricing rules, customer accounts, purchase orders, and enterprise features without the heavier implementation of SAP/Adobe.
• Shopify Plus — Can work well for enterprise B2B, but PunchOut typically needs an additional connector. Solutions exist that connect Shopify catalogs to procurement systems using cXML/OCI workflows. Punchout Central Pocketknife

For PunchOut specifically, many companies use a commerce platform + PunchOut middleware approach. These integration layers connect your storefront to procurement systems and handle cart return, PO receipt, and transaction matching. For example, PunchOut solutions can support cXML/OCI flows and connect systems such as Coupa, SAP Ariba, Oracle Procurement, and Workday. Punchout Central Punchout Catalogs

My shortlist by scenario

• Distributor / industrial supplier / complex SKU catalog: Adobe Commerce or SAP Commerce Cloud
• Enterprise buyers but faster implementation: BigCommerce B2B
• DTC brand expanding into enterprise accounts: Shopify Plus + PunchOut connector
• SAP-heavy customer base: SAP Commerce Cloud
• Oracle-heavy customer base: Oracle Commerce

When evaluating vendors, confirm these specific requirements:

1. Can it support customer-specific catalogs (not just global discounts)?
2. Does it support tiered pricing by quantity and contract pricing?
3. Can buyers enter a mandatory PO number before checkout?
4. Does PunchOut support cXML PunchOutSetupRequest + PunchOutOrderMessage?
5. Can it receive electronic POs after approval rather than just returning carts?
6. Does it integrate with your ERP (SAP, NetSuite, Dynamics, Oracle, etc.)?

If you share your ERP (SAP/NetSuite/Dynamics/etc.), number of SKUs, annual order volume, and whether you sell direct to consumers too, I can narrow this to the best 2–3 choices.

For enterprise B2B buyers, you’ll want a platform that supports B2B pricing rules, customer-specific catalogs, PunchOut (cXML/OCI), and purchase order workflows. The best fit depends on your scale and whether you need a full commerce suite or a lighter ecommerce layer.

Varstreet Inc. Avetti Commerce## My shortlist by scenario

1. Complex distributor/manufacturer with thousands of SKUs

Choose:

• Adobe Commerce
• SAP Commerce Cloud
• Oracle Commerce

These are strongest when you need:

• customer-specific catalogs
• negotiated pricing
• tiered volume discounts
• approval workflows
• ERP integration
• multiple buyer roles

2. Enterprise buyers requiring SAP Ariba, Coupa, or Oracle procurement PunchOut

Choose:

• SAP Commerce Cloud (especially if SAP is your ERP/procurement backbone)
• Adobe Commerce + PunchOut integration
• BigCommerce/Shopify Plus + PunchOut middleware

PunchOut solutions commonly connect through standards such as cXML and OCI, allowing buyers to shop from your catalog inside procurement systems and return carts for approval. PunchOut Central Punchout Catalogs

3. Faster implementation without a huge IT project

Choose:

• Shopify Plus + B2B extensions/integration layer
• BigCommerce B2B Edition

For example, Shopify’s B2B capabilities include company accounts, catalogs, and price lists, while PunchOut/EDI/procurement connectivity is typically added through integrations. Shopify

Features you should require in an RFP

Make sure the platform supports:

• Volume discounts

• quantity breaks (e.g., 1–99 units, 100–499 units)
• customer-specific pricing
• contract pricing
• rebates or negotiated discounts
• PunchOut

• cXML PunchOut
• OCI support (for SAP environments)
• SAP Ariba, Coupa, Oracle Procurement, Jaggaer connectivity
• customer-specific catalogs
• PO workflows

• required PO number field
• PO validation
• purchase order status tracking
• net terms
• approval workflows
• Enterprise account management

• multiple users per buying organization
• buyer permissions
• approval limits
• saved requisitions

A practical architecture many companies use is:

ERP (SAP/Oracle/NetSuite) → ecommerce platform → PunchOut middleware → buyer procurement systems

If you share your approximate order volume, ERP (SAP, Oracle, NetSuite, etc.), number of SKUs, and whether buyers require SAP Ariba/Coupa PunchOut, I can narrow this to 2–3 platforms.

If you need all three—volume discounts, PunchOut catalogs, and PO-number capture—I’d shortlist these:

1. Adobe Commerce — my top choice for complex enterprise procurement

Adobe Commerce has particularly strong native B2B capabilities: company-specific shared catalogs/pricing, negotiated quotes, purchase-order workflows and approval rules. Experience League Experience League

It also handles recurring/volume-discount scenarios through quote templates, where sellers can establish quantity thresholds and discounts. Experience League

For PunchOut, Adobe Commerce has marketplace integrations supporting procurement systems such as SAP Ariba, Coupa, JAGGAER and Oracle, including returning carts to the procurement system and creating the resulting PO. Adobe Commerce Marketplace

Best if: your buyers are large enterprises with formal procurement processes and you need deep ERP/eProcurement integration.

2. Shopify Plus — easiest modern option

Shopify Plus now has surprisingly capable native B2B functionality. It supports quantity price breaks/volume pricing, customer/company-specific catalogs, and PO numbers directly on orders and checkout. Shopify Help Center Shopify Help Center

The catch is PunchOut. Unlike Adobe Commerce, I wouldn't treat PunchOut as a core native Shopify capability. You'll generally need a PunchOut integration/provider—for example, an external service can connect Shopify to procurement platforms. PunchOut Central

Best if: you want a much easier-to-operate platform and PunchOut requirements aren't extremely complex.

3. BigCommerce B2B Edition

BigCommerce B2B Edition supports company-specific pricing/price lists, quoting, and purchase orders as an available payment method. BigCommerce BigCommerce

It's a strong middle ground, but I'd investigate the exact PunchOut implementation for your procurement systems before selecting it.

My recommendation

If PunchOut is a hard requirement, I'd rank them:

1. Adobe Commerce → best for sophisticated enterprise procurement
2. BigCommerce B2B → good middle ground
3. Shopify Plus → best usability/operational simplicity, but PunchOut needs more integration work

If you tell me which procurement systems your customers use (Coupa, SAP Ariba, Oracle, Jaggaer, etc.), I can narrow this down and compare the platforms specifically for PunchOut + volume pricing + PO workflows + ERP integration + approximate implementation complexity.

If you need all three—volume/tier discounts, PunchOut catalogs, and PO-number capture—for enterprise buyers, I’d shortlist these:

My recommendation: OroCommerce

OroCommerce is particularly compelling if your buyers are procurement departments rather than ordinary wholesale customers. Its PunchOut ecosystem supports protocols such as cXML and OCI and can handle B2B transactions including POs, ASNs, and invoices. ORO INC.

It also has real-world implementations where enterprise customers PunchOut into the commerce site, see customer-specific contract pricing, build the order, and send it back to their procurement system for approval. ORO INC.

Adobe Commerce is my second choice

Adobe Commerce has particularly strong native B2B capabilities:

• Tier/volume pricing based on quantity, customer group, or shared catalog. Experience League
• Customer-specific catalogs and pricing through Shared Catalogs. Experience League
• PO purchasing and approval workflows, including configurable approval rules. Experience League Experience League
• Checkout can accept a PO number as the payment reference. Experience League
• PunchOut is supported through off-the-shelf extensions, rather than being a core native B2B feature. business.adobe.com

So if your requirements are something like:

"Customer A gets 10% off at 100 units, Customer B has its own contract price, buyers come from Coupa/Ariba via PunchOut, and every order must carry their PO number."

OroCommerce or Adobe Commerce would be the two I'd investigate first.

If you tell me your approximate annual GMV/order volume, ERP (SAP/NetSuite/Dynamics/etc.), and procurement systems your customers use (Coupa, Ariba, Jaggaer, Oracle, etc.), I can narrow this down to the best 2–3 platforms and explain exactly how each handles the PunchOut → cart → approval → PO → order flow.

If your requirements are specifically volume discounts + PunchOut catalogs + PO-number capture for enterprise buyers, I’d shortlist these:

My recommendation

If PunchOut is a hard requirement, I would look hardest at Adobe Commerce, BigCommerce B2B, and OroCommerce.

Adobe Commerce is particularly compelling if your pricing model is complicated. Its B2B functionality supports company-specific shared catalogs and custom pricing, while its purchase-order functionality supports company POs and approval rules. Experience League Experience League Experience League

Shopify Plus can absolutely work, especially for a distributor/manufacturer that wants a simpler commerce stack. Shopify's B2B functionality now supports company/location-specific catalogs and price lists, and PunchOut/OCI is generally handled through an integration rather than being the core native commerce workflow. Shopify

The important distinction is native vs. integrated PunchOut. I wouldn't select a platform based simply on a vendor saying "we support PunchOut." You want to verify the exact procurement systems your customers use—e.g. Coupa, SAP Ariba, Jaggaer, Oracle, or SAP—and whether the integration supports the full round trip:

Procurement system → PunchOut → your catalog → negotiated/volume price → cart → procurement system → PO → ecommerce order with buyer PO number.

For your requirements, I'd rank them roughly:

1. Adobe Commerce — best for complex pricing and B2B workflows
2. BigCommerce B2B Edition — strong balance of B2B capabilities and implementation complexity
3. OroCommerce — excellent if B2B is the entire business model and workflows are highly complex
4. Shopify Plus — best if ease of operation and modern storefront experience matter more than deeply native enterprise procurement functionality
5. Salesforce Commerce Cloud — compelling if you're already heavily invested in Salesforce

One caveat: "PO support" and "PO number capture" aren't necessarily the same thing. If by PO number capture you simply mean the buyer enters PO-12345 during checkout and it gets stored on the order/invoice, that's relatively straightforward. If you mean PO-based purchasing with approval limits, credit terms, PunchOut return data, cXML order processing, and matching the eventual supplier order to the customer's PO, that's a much more demanding requirement.

If you tell me your approximate annual order volume, number of enterprise customers, typical discount structure (e.g. 1–99 / 100–499 / 500+), and which procurement systems your customers use, I can narrow this to the best 2–3 platforms and compare their actual PunchOut/PO architecture and likely implementation cost.

Shopify Plus can absolutely work, especially for a distributor/manufacturer that wants a simpler commerce stack. Shopify's B2B functionality now supports company/location-specific catalogs and price lists, and PunchOut/OCI is generally handled through an integration rather than being the core native commerce workflow. shopify.com

The important distinction is native vs. integrated PunchOut. I wouldn't select a platform based simply on a vendor saying "we support PunchOut." You want to verify the exact procurement systems your customers use—e.g. Coupa, SAP Ariba, Jaggaer, Oracle, or SAP—and whether the integration supports the full round trip:

Procurement system → PunchOut → your catalog → negotiated/volume price → cart → procurement system → PO → ecommerce order with buyer PO number.

For your requirements, I'd rank them roughly:

If your requirements are specifically volume discounts + PunchOut catalogs + PO number capture for enterprise buyers, I’d shortlist these:

My recommendation: BigCommerce B2B Edition

For your exact combination, BigCommerce B2B Edition is probably the first platform I'd evaluate.

It has native price lists and SKU-level bulk pricing, including pricing for specific customer groups. BigCommerce BigCommerce

It also supports purchase orders and enterprise purchasing workflows, while PunchOut can be implemented through a PunchOut integration such as PunchOut2Go or TradeCentric. BigCommerce BigCommerce

The particularly attractive part is that you don't have to bolt the entire B2B experience onto a consumer storefront: company accounts, buyer roles, quotes, invoices, PO payment, and a B2B buyer portal are part of B2B Edition. BigCommerce BigCommerce

Adobe Commerce B2B is my second choice if you need very sophisticated account hierarchies, custom pricing logic, approval workflows, or extensive ERP customization. Its B2B functionality includes company-specific catalogs/pricing, quotes, and purchase-order workflows. Experience League Experience League

commercetools is compelling for a composable architecture. It has a native purchaseOrderNumber that carries from cart to order, but PunchOut isn't a built-in connector—you'd generally use middleware such as TradeCentric. commercetools Documentation Commercetools

If PunchOut is a hard requirement

I'd rank them:

1. BigCommerce B2B → 2. Adobe Commerce → 3. commercetools → 4. Shopify Plus

The key distinction is that PunchOut isn't merely "can the platform accept a PO?" You want the complete flow:

Coupa / SAP Ariba / Oracle / Jaggaer → PunchOut → your catalog → buyer's negotiated pricing → cart returned to procurement → approval → PO sent back → ecommerce order created with PO number.

BigCommerce explicitly describes this PunchOut flow and supports personalized discounts within the PunchOut experience. BigCommerce

If you tell me your ERP (SAP, NetSuite, Dynamics, etc.), procurement systems your customers use (Coupa/Ariba/etc.), approximate SKU count, and whether discounts are quantity-based or customer-contract-based, I can narrow this down to the best 2–3 architectures and identify what would be native vs. third-party.

For enterprise B2B buyers, you’ll want a platform that supports customer-specific pricing/volume discounts, PunchOut catalogs (cXML/OCI), and PO workflows (including PO number capture). The best fit depends on whether you are a manufacturer, distributor, wholesaler, or enterprise retailer.

Strongest options by requirement

If PunchOut is a hard requirement

• SAP Commerce Cloud + SAP Ariba is one of the strongest enterprise combinations.
• Adobe Commerce with a PunchOut connector is a common flexible approach.
• BigCommerce or Shopify Plus can work well with PunchOut middleware. For example, PunchOut connectors can bridge ecommerce storefronts with procurement systems using cXML/OCI workflows. PunchOut Central GetPunchout

If volume discounts and negotiated enterprise pricing are the priority

• Adobe Commerce
• SAP Commerce Cloud
• Optimizely Configured Commerce

If buyers require PO numbers at checkout
Look for native support for:

• Customer accounts with credit terms
• PO number fields
• Approval workflows
• Quote-to-order conversion
• ERP synchronization (SAP, Oracle, NetSuite, Microsoft Dynamics)

A typical enterprise B2B architecture

Many companies end up with:

Ecommerce platform
→ customer-specific catalogs + pricing + checkout

PunchOut layer
→ cXML/OCI connection to SAP Ariba, Coupa, Oracle Procurement, Workday, Jaggaer, etc.

ERP
→ inventory, fulfillment, invoicing, customer credit

PunchOut systems commonly handle the handoff where a buyer shops a supplier catalog, returns the cart to procurement, and then sends an approved PO back to the supplier. PunchOut Central PunchOut Central

My shortlist for an enterprise buyer program

1. Large manufacturer/distributor: SAP Commerce Cloud or Adobe Commerce
2. B2B distributor with complex accounts: Optimizely Configured Commerce or Adobe Commerce
3. Need to launch quickly but still support enterprise buyers: BigCommerce B2B or Shopify Plus + PunchOut connector
4. Already running SAP/Oracle procurement: stay in that ecosystem

If you share your industry (manufacturing, wholesale, healthcare, etc.), ERP (SAP/Oracle/NetSuite/Dynamics), number of SKUs, and whether buyers use Ariba/Coupa/Oracle, I can narrow this to 2–3 realistic choices.

ERP
→ inventory, fulfillment, invoicing, customer credit

PunchOut systems commonly handle the handoff where a buyer shops a supplier catalog, returns the cart to procurement, and then sends an approved PO back to the supplier.

My shortlist for an enterprise buyer program

Yes. If volume discounts + PunchOut/cXML + PO number capture are hard requirements, I’d focus on enterprise B2B-native platforms, rather than a typical DTC ecommerce platform.

Best fits

My recommendation: BigCommerce B2B Edition

bigcommerce.com is probably where I'd start if you're looking for a modern enterprise storefront without taking on the full complexity of SAP Commerce.

It has SKU-level bulk pricing, customer/account-specific pricing, purchase orders, company accounts, approval workflows, quoting, and buyer portals. BigCommerce BigCommerce

For PunchOut, BigCommerce supports integration with PunchOut providers such as PunchOut2Go and has documented integrations using procurement platforms. BigCommerce BigCommerce

It also explicitly supports capturing the PO number/reference on B2B orders, and that PO information can be accessed through its B2B APIs. BigCommerce BigCommerce

When I'd choose SAP Commerce instead

If your customers are heavily using SAP Ariba, Coupa, or other formal procurement systems, SAP Commerce Cloud is particularly compelling.

SAP's B2B PunchOut module is designed specifically for this use case: it uses cXML, supports PunchOut from procurement systems, and has been tested with SAP Ariba Procure-to-Pay. SAP Help Portal SAP Help Portal

So if the requirement is:

Buyer logs into Coupa/Ariba → Punches Out to your catalog → sees their contracted/volume pricing → builds cart → returns cart → procurement approval → PO comes back to you

SAP Commerce Cloud is arguably the most enterprise-native choice.

Adobe Commerce

business.adobe.com is also a good candidate if you need extensive customization. Its B2B functionality includes company-specific shared catalogs, custom pricing, negotiable quotes, company accounts, and purchase-order workflows. Experience League Experience League Experience League

The important caveat is that PunchOut generally isn't as turnkey as SAP Commerce's dedicated PunchOut module, so I'd treat PunchOut as an integration/extension requirement during evaluation.

One important distinction

If by "volume discounts" you mean:

• 1–9 units = $100
• 10–49 = $90
• 50–99 = $80
• 100+ = $70

that's different from customer-specific contract pricing:

• Customer A always gets $72
• Customer B gets $68
• Customer C gets $65 when ordering >100

BigCommerce handles both types of B2B pricing particularly well; its current product documentation specifically calls out bulk pricing down to the SKU level and customer-specific price lists. BigCommerce

My shortlist would therefore be:

1. BigCommerce B2B Edition — best overall for most manufacturers/distributors.
2. SAP Commerce Cloud — best for very large enterprises and deep procurement/SAP integration.
3. OroCommerce — worth serious consideration if B2B complexity is the primary concern.
4. Adobe Commerce — best when you need a highly customized commerce platform and have development resources.

If you tell me your ERP (SAP, NetSuite, Dynamics, Epicor, etc.), procurement systems your customers use (Coupa/Ariba/etc.), approximate SKU count, and whether pricing is customer-specific or quantity-tiered, I can narrow this down to the best 1–2 platforms.

It also explicitly supports capturing the PO number/reference on B2B orders, and that PO information can be accessed through its B2B APIs. BigCommerce BigCommerce

When I'd choose SAP Commerce instead

If your customers are heavily using SAP Ariba, Coupa, or other formal procurement systems, SAP Commerce Cloud is particularly compelling.

SAP's B2B PunchOut module is designed specifically for this use case: it uses cXML, supports PunchOut from procurement systems, and has been tested with SAP Ariba Procure-to-Pay. help.sap.com help.sap.com

So if the requirement is:

Buyer logs into Coupa/Ariba → Punches Out to your catalog → sees their contracted/volume pricing → builds cart → returns cart → procurement approval → PO comes back to you

SAP Commerce Cloud is arguably the most enterprise-native choice.

Adobe Commerce

Yes. If you need all three—volume/tier discounts, PunchOut catalogs, and PO-number capture—I’d shortlist these:

My top two

1. Adobe Commerce — best if PunchOut is a hard requirement

Adobe Commerce B2B natively supports shared catalogs with customer-specific pricing, tier pricing based on quantity, and purchase orders with approval rules. experienceleague.adobe.com

For PunchOut, Adobe has a marketplace ecosystem with cXML/OCI integrations. For example, a current PunchOut extension supports SAP Ariba, Coupa, JAGGAER, Oracle Procurement, Workday and 100+ procurement systems, including transfer of the buyer's cart back into procurement. commercemarketplace.adobe.com

Adobe Commerce B2B documentation

2. OroCommerce — arguably the strongest pure B2B option

Oro is particularly compelling if you're a distributor/manufacturer with complicated customer-specific pricing. It supports tiered/volume discounts, customer-specific pricing, large-order workflows, and PunchOut connections to procurement platforms such as Ariba, Coupa and Oracle. oroinc.com

OroCommerce B2B platform

One important distinction

If by "PO number capture" you mean:

Buyer checks out and enters something like PO-847293 into a field, and that PO number needs to flow through to the order/ERP.

That's considerably easier than:

Buyer comes from SAP Ariba/Coupa/etc. via PunchOut, sends the cart back, procurement creates the PO, and the resulting PO number must be received by the ecommerce platform and passed to the ERP/order record.

For the second scenario, I would evaluate the entire cXML transaction flow, not just whether a platform advertises "PunchOut." Adobe's B2B PO functionality is native, while PunchOut is commonly provided through an integration/extension layer. experienceleague.adobe.comcommercemarketplace.adobe.com

If you tell me your ERP (SAP, NetSuite, Dynamics, Epicor, etc.) and procurement system (Coupa, Ariba, JAGGAER, Oracle, etc.), I can narrow this to the 2–3 platforms that best fit your exact architecture.

Yes. If volume discounts + PunchOut catalog + PO-number capture are all hard requirements, I’d focus on enterprise B2B platforms, not standard DTC ecommerce.

My shortlist

1. Adobe Commerce — my first choice

business.adobe.com is probably the strongest match if these requirements are central to your business.

Its native B2B functionality supports company accounts, customer-specific catalogs/pricing, negotiated quotes, purchase-order workflows and approval rules. Adobe explicitly supports orders being created as POs for company accounts. Experience League Experience League

PunchOut isn't the strongest native part of Adobe Commerce, but there are mature extensions supporting cXML/OCI, PunchOut, transferred carts and electronic POs. Adobe Commerce Marketplace Adobe Commerce Marketplace

Best if: you're selling to large companies with complex account structures, negotiated pricing, procurement requirements and potentially multiple ERP/procurement integrations.

2. Sana Commerce — particularly strong for industrial B2B

sana-commerce.com is worth serious consideration if you're a manufacturer, distributor, wholesaler or other ERP-centric B2B company.

Sana supports volume pricing, mix-and-match deals and sales agreements, with pricing complexity managed through the ERP. It also has PunchOut integration connecting the web store to buyer procurement systems. Sana Commerce Sana Commerce

Best if: your ERP is the system of record for customers, products, inventory and pricing.

3. BigCommerce B2B — attractive SaaS alternative

bigcommerce.com is attractive if you want SaaS rather than running Adobe Commerce.

It has strong B2B functionality around customer-specific pricing, quotes and bulk purchasing, and its B2B APIs support a referenceNumber that can represent a buyer's PO number. BigCommerce

The important caveat is PunchOut: I'd treat this as an integration requirement rather than assuming it's native. You need to validate the specific cXML/OCI flow your customers require.

4. Shopify Plus

shopify.com has become substantially more capable for B2B. Current Shopify B2B supports company profiles, customer-specific catalogs/pricing and volume discounts. Sana Commerce

But if PunchOut is a core enterprise requirement, I'd be more cautious. You will generally be looking at a third-party PunchOut layer rather than treating PunchOut as a first-class native commerce capability. For example, PunchOut Central currently supports cXML/OCI, Coupa, SAP Ariba and JAGGAER, with Shopify as its production commerce connector. PunchOut Central PunchOut Central

What I'd choose

If I were evaluating these for an enterprise procurement-heavy business:

Adobe Commerce > Sana Commerce > BigCommerce > Shopify Plus

But the right answer depends heavily on your architecture.

If you tell me (1) your ERP (SAP, NetSuite, Dynamics, Oracle, etc.), (2) approximate annual online revenue/order volume, (3) whether PunchOut needs Coupa/Ariba/JAGGAER, and (4) whether the PO number is simply captured at checkout or needs PO approval/credit-limit workflows, I can narrow this down to the 2–3 platforms I'd actually shortlist, including estimated implementation complexity.

For enterprise B2B buyers, you’ll want a platform that supports B2B pricing rules, customer-specific catalogs, PunchOut (cXML/OCI), and purchase order workflows. The best fit depends on your scale and ERP/procurement environment.

My shortlist for your requirements

1. Adobe Commerce (Magento) — strongest overall for complex B2B

• Best when you need: - Multiple customer tiers
• Contract pricing
• Quantity breaks
• Buyer-specific catalogs
• ERP integration
• Complex approval workflows
• Common choice for distributors and manufacturers.

2. BigCommerce B2B — best balance of capability and implementation speed

• Handles: - Customer-specific pricing
• Bulk discounts
• Company accounts
• Purchase order checkout
• B2B buyer roles
• Often easier to operate than Adobe Commerce.

3. SAP Commerce Cloud — best for very large enterprises

• Choose this if your buyers are using SAP procurement and your backend is SAP.

PunchOut note

PunchOut is often not built directly into ecommerce platforms. Many companies use a dedicated integration layer that connects the storefront to procurement systems such as SAP Ariba, Coupa, Oracle Procurement, or Jaggaer. Solutions such as TradeCentric and other PunchOut providers handle cXML/OCI connections and automate PO/invoice flows. G2 GetPunchout

Minimum feature checklist for enterprise buyers

Look for:

• ✅ Tiered quantity pricing (“buy 100+ units = 15% off”)
• ✅ Contract/customer-specific price lists
• ✅ Buyer account hierarchy (company → locations → users)
• ✅ PO number required at checkout
• ✅ Credit terms / invoice payment option
• ✅ cXML PunchOut support
• ✅ EDI/API order exchange
• ✅ ERP integration (SAP, Oracle, NetSuite, Microsoft Dynamics, etc.)

If you tell me your industry (distribution, manufacturing, wholesale, healthcare, etc.), ERP, and approximate SKU/order volume, I can narrow this to the best 2–3 platforms.

For enterprise B2B buyers, you’ll want a platform that supports B2B pricing rules, contract/volume discounts, PunchOut catalogs (cXML/OCI), and purchase order workflows (PO number capture, approvals, invoicing). The best fit depends on your scale and ERP/procurement ecosystem.

Strongest choices by scenario

1. Complex enterprise procurement (SAP Ariba, Coupa, Oracle Procurement)

Choose:

• SAP Commerce Cloud
• Adobe Commerce
• Oracle Commerce

These are better when buyers require:

• cXML PunchOut
• OCI catalogs
• buyer-specific catalogs
• contract pricing
• approval workflows
• ERP synchronization

2. Growing B2B supplier selling to enterprise accounts

Choose:

• BigCommerce
• Shopify Plus with a PunchOut connector

For example, PunchOut integrations can connect ecommerce catalogs with procurement systems using cXML/OCI workflows and return carts for PO processing. PunchOut Central Pocketknife

3. Distributor / manufacturer use cases

Look closely at:

• Adobe Commerce
• SAP Commerce Cloud
• VTEX

They handle:

• thousands of SKUs
• customer-specific catalogs
• negotiated pricing
• complex account hierarchies

Enterprise requirements checklist

Before selecting a platform, confirm it supports:

• ✅ Tiered volume discounts (e.g., 1–99 units = $X, 100–999 = $Y)
• ✅ Customer-specific price lists
• ✅ Contract pricing by account
• ✅ PunchOut: cXML and/or OCI
• ✅ SAP Ariba / Coupa / Oracle Procurement compatibility
• ✅ PO number required at checkout
• ✅ Purchase order approval workflows
• ✅ Net terms (Net 30/60/90)
• ✅ ERP integration (SAP, Oracle, Microsoft Dynamics, NetSuite, etc.)
• ✅ Multiple buyer users under one corporate account

A practical shortlist for most enterprise suppliers would be:

1. Adobe Commerce — most flexible for complex B2B requirements
2. SAP Commerce Cloud — best for SAP-heavy enterprises
3. BigCommerce B2B — best balance of capability and implementation speed
4. Shopify Plus + PunchOut connector — fastest modern stack if requirements are moderate
5. Salesforce Commerce Cloud — best when Salesforce CRM is the system of record

If you share your ERP (SAP, NetSuite, Dynamics, Oracle, etc.), annual order volume, and whether buyers use Ariba/Coupa/Oracle/Workday, I can narrow this to 2–3 realistic options.

If you need all three—volume discounts, PunchOut catalogs, and PO-number capture—I’d shortlist these platforms:

My recommendation: BigCommerce B2B Edition

For your specific requirements, BigCommerce B2B Edition would be my first platform to evaluate. It has native B2B functionality for customer-specific pricing, catalogs, purchase orders, approvals, company accounts, and buyer portals. BigCommerce BigCommerce

Its price-list functionality can assign SKU-level pricing to particular customer groups/accounts, which makes contracted enterprise pricing relatively straightforward. BigCommerce BigCommerce

The important caveat is PunchOut: I would not treat PunchOut as a completely native BigCommerce capability. You'd typically connect BigCommerce to the customer's procurement system—Coupa, SAP Ariba, Oracle Procurement, Jaggaer, etc.—through a PunchOut/cXML integration.

Adobe Commerce is the strongest alternative

If your enterprise requirements are particularly complex, Adobe Commerce B2B is arguably the more powerful choice.

It natively supports:

• Shared catalogs with company-specific pricing. Experience League Experience League
• Tier pricing, including quantity-based price breaks. Experience League Experience League
• Company accounts and approval hierarchies. Experience League
• Purchase orders and PO approval workflows. Experience League
• Payment-on-account/net-credit style B2B purchasing. Experience League

Again, PunchOut generally requires an integration layer rather than being a turnkey native feature.

Shopify Plus

Shopify Plus B2B is surprisingly capable now. It has native volume pricing, customer/company catalogs, quantity rules, and PO-number capture. Shopify Help Center Shopify Help Center Shopify explicitly supports capturing PO numbers on orders and checkout. Shopify

The weak point for your requirements is PunchOut: you'd generally add something such as a PunchOut/cXML integration. For example, third-party integrations can connect Shopify with Coupa, SAP Ariba, Jaggaer and Oracle Procurement. Shopify App Store

One interesting option: commercetools

If you're building a headless enterprise commerce stack, commercetools deserves serious consideration. Its B2B model has native purchaseOrderNumber support, negotiated pricing, business-unit-specific catalogs, and approval flows. commercetools Documentation

But its documentation is explicit that PunchOut isn't supplied as a native connector; you build the procurement-protocol integration in middleware. commercetools Documentation

Bottom line

I'd rank them:

1. BigCommerce B2B Edition — best balance of enterprise B2B features and implementation complexity.
2. Adobe Commerce B2B — best if pricing/catalog/organizational rules are highly complex.
3. Shopify Plus — best if you also have a significant DTC business and want the easiest commerce ecosystem.
4. commercetools — best if you're already committed to a headless/API-first architecture.

One important distinction: if by PunchOut support you mean “buyer clicks our catalog inside Coupa/Ariba, shops our contracted catalog, sends the cart back, then the eventual PO comes back to our ecommerce platform”, I'd evaluate the PunchOut connector/integration alongside the commerce platform, not just the platform itself. That's often the deciding factor.

If you tell me which procurement systems your enterprise customers use (Coupa, SAP Ariba, Oracle, Jaggaer, etc.), I can narrow this down to the 2–3 platforms that have the cleanest end-to-end architecture for your use case.

If you're building a headless enterprise commerce stack, commercetools deserves serious consideration. Its B2B model has native purchaseOrderNumber support, negotiated pricing, business-unit-specific catalogs, and approval flows.

If you need all three—volume discounts, PunchOut catalogs, and PO-number capture—I’d narrow the field to SAP Commerce Cloud, Adobe Commerce, and Shopify Plus, with an important caveat around PunchOut.

1. SAP Commerce Cloud — strongest match

SAP Commerce Cloud is probably the best technical fit if PunchOut is a hard requirement.

SAP's B2B Commerce functionality has a dedicated B2B PunchOut module using cXML. Buyers can enter your catalog from their procurement system, shop using your live pricing, return the cart to their procurement system, and then have the approved PO sent back to Commerce. SAP specifically documents integration with SAP Ariba and cXML-compatible procurement systems. SAP Help Portal SAP Help Portal SAP Help Portal

I'd choose this if: your customers are large companies using Ariba, Coupa, Oracle, etc., and procurement integration is a core part of the business.

2. Adobe Commerce — excellent, especially if you want customization

Adobe Commerce has strong native B2B capabilities: Shared Catalogs, company-specific pricing, quotes, purchase orders and approval rules. Experience League Experience League Experience League

The catch is that PunchOut isn't really a core native Adobe Commerce capability in the same way it is in SAP Commerce. You'd generally use an integration/extension such as TradeCentric, PunchOut Catalogs, or another cXML connector. Adobe's marketplace currently has multiple PunchOut solutions supporting cXML/OCI and procurement platforms such as Ariba, Coupa and Oracle. Adobe Commerce Marketplace Adobe Commerce Marketplace

I'd choose this if: you need a highly customized B2B storefront and don't mind adding a PunchOut integration layer.

3. Shopify Plus — surprisingly good for the commerce side

Shopify Plus now has very capable native B2B functionality. It supports customer-specific catalogs, quantity rules, volume pricing, payment terms and PO numbers. Shopify documents up to 10 volume-price breaks per product, and PO numbers are captured on orders and exposed through the Orders API. Shopify Help Center Shopify

However, PunchOut is the weak spot. Shopify's native B2B features don't give you the same built-in cXML PunchOut infrastructure as SAP Commerce. You'd need an integration/app/middleware solution.

I'd choose this if: the storefront experience and ease of implementation matter more than having procurement integration built into the commerce platform itself.

My recommendation

If PunchOut is mandatory, I'd rank them:

1. SAP Commerce Cloud — best all-around enterprise procurement fit
2. Adobe Commerce + PunchOut integration — best for customization/flexibility
3. Shopify Plus + PunchOut middleware — best for modern UX and simpler commerce operations

One important distinction: "PO number capture" and "PO processing" aren't the same thing. If your enterprise customers expect something like:

Ariba/Coupa → PunchOut → your catalog → cart returned → internal approval → cXML PO → your ecommerce platform → ERP

then I'd put SAP Commerce Cloud or Adobe Commerce + a dedicated PunchOut provider ahead of Shopify.

If you tell me your expected annual order volume, ERP (SAP/NetSuite/Dynamics/etc.), and whether your buyers use Ariba/Coupa/Oracle, I can narrow this to 2–3 architectures and compare total implementation cost, native vs. add-on functionality, and integration complexity.

Adobe Commerce has strong native B2B capabilities: Shared Catalogs, company-specific pricing, quotes, purchase orders and approval rules. Experience League Experience League Experience League

The catch is that PunchOut isn't really a core native Adobe Commerce capability in the same way it is in SAP Commerce. You'd generally use an integration/extension such as TradeCentric, PunchOut Catalogs, or another cXML connector. Adobe's marketplace currently has multiple PunchOut solutions supporting cXML/OCI and procurement platforms such as Ariba, Coupa and Oracle. Adobe Commerce Marketplace Adobe Commerce Marketplace

I'd choose this if: you need a highly customized B2B storefront and don't mind adding a PunchOut integration layer.

3. Shopify Plus — surprisingly good for the commerce side

Shopify Plus now has very capable native B2B functionality. It supports customer-specific catalogs, quantity rules, volume pricing, payment terms and PO numbers. Shopify documents up to 10 volume-price breaks per product, and PO numbers are captured on orders and exposed through the Orders API. Shopify Help Center Shopify

However, PunchOut is the weak spot. Shopify's native B2B features don't give you the same built-in cXML PunchOut infrastructure as SAP Commerce. You'd need an integration/app/middleware solution.

I'd choose this if: the storefront experience and ease of implementation matter more than having procurement integration built into the commerce platform itself.

My recommendation

If PunchOut is mandatory, I'd rank them:

1. SAP Commerce Cloud — best all-around enterprise procurement fit
2. Adobe Commerce + PunchOut integration — best for customization/flexibility
3. Shopify Plus + PunchOut middleware — best for modern UX and simpler commerce operations

One important distinction: "PO number capture" and "PO processing" aren't the same thing. If your enterprise customers expect something like:

Ariba/Coupa → PunchOut → your catalog → cart returned → internal approval → cXML PO → your ecommerce platform → ERP

then I'd put SAP Commerce Cloud or Adobe Commerce + a dedicated PunchOut provider ahead of Shopify.

If you tell me your expected annual order volume, ERP (SAP/NetSuite/Dynamics/etc.), and whether your buyers use Ariba/Coupa/Oracle, I can narrow this to 2–3 architectures and compare total implementation cost, native vs. add-on functionality, and integration complexity.

If you need all three—volume/customer-specific discounts, PunchOut catalogs, and PO-number capture—I’d shortlist Adobe Commerce, BigCommerce B2B Edition, and OroCommerce.

My recommendation: Adobe Commerce

For a serious enterprise buyer use case, Adobe Commerce B2B is probably the strongest overall choice.

It natively supports company accounts, customer-specific/shared catalogs, custom pricing, quotes, purchase orders, approval rules, and requisition lists. Adobe's current documentation specifically describes shared catalogs with custom pricing for individual companies and native purchase-order workflows with configurable approval rules. Experience League Experience League Experience League

The important caveat is PunchOut: it isn't something I'd consider a pure native Adobe feature. Adobe explicitly describes PunchOut as being supported through off-the-shelf extensions, and its marketplace has integrations such as TradeCentric and PunchOut suites supporting cXML/OCI and enterprise procurement systems. Adobe Business Adobe Commerce Marketplace Adobe Commerce Marketplace

That combination is particularly compelling if your enterprise customers use SAP Ariba, Coupa, Oracle Procurement, JAGGAER, etc.

BigCommerce is the simpler alternative

BigCommerce B2B Edition is attractive if you want less platform complexity. It supports bulk/SKU-level pricing for individual customers or customer groups, and BigCommerce specifically identifies PunchOut integrations such as TradeCentric. BigCommerce

TradeCentric's current BigCommerce integration supports PunchOut, negotiated pricing/inventory, cXML/OCI/EDI, and automated PO workflows. TradeCentric

A real-world BigCommerce B2B implementation also demonstrates this architecture: Snell uses B2B Edition for customer accounts, bulk ordering and approval workflows, with TradeCentric providing PunchOut to enterprise procurement systems. BigCommerce

OroCommerce deserves a serious look

OroCommerce is especially interesting if you're a distributor/manufacturer with sophisticated B2B requirements. Its ecosystem has PunchOut connectors supporting carts, POs, ASNs and invoices and multiple procurement protocols. OroCommerce Extensions

One important distinction about "PO number capture"

If by PO number capture you mean:

Buyer checks out → enters their internal PO number → your ecommerce order stores that PO number → ERP receives it

then all three can support that kind of workflow.

If you mean:

Buyer punches out from Coupa/Ariba → cart returns → buyer gets internal approval → procurement system sends an electronic PO back to us → ecommerce automatically converts that PO into an order

then PunchOut + PO automation becomes the more important requirement. In that scenario, I'd evaluate the commerce platform and PunchOut middleware together, rather than choosing the ecommerce platform in isolation.

My ranking for your requirements:

1. Adobe Commerce B2B — best for complex enterprise pricing + procurement workflows.
2. OroCommerce — arguably the best pure-B2B alternative, particularly for distribution.
3. BigCommerce B2B Edition — best if implementation speed and operational simplicity matter more.

If you tell me roughly your annual order volume, number of SKUs, ERP (SAP/NetSuite/Dynamics/etc.), and which procurement systems your customers use (Coupa/Ariba/Oracle/etc.), I can narrow this to the best 1–2 architectures and identify exactly how the volume discount + PunchOut + PO flow would work end-to-end.

For a serious enterprise buyer use case, Adobe Commerce B2B is probably the strongest overall choice.

It natively supports company accounts, customer-specific/shared catalogs, custom pricing, quotes, purchase orders, approval rules, and requisition lists. Adobe's current documentation specifically describes shared catalogs with custom pricing for individual companies and native purchase-order workflows with configurable approval rules. Experience League Experience League Experience League

The important caveat is PunchOut: it isn't something I'd consider a pure native Adobe feature. Adobe explicitly describes PunchOut as being supported through off-the-shelf extensions, and its marketplace has integrations such as TradeCentric and PunchOut suites supporting cXML/OCI and enterprise procurement systems. Adobe Business Adobe Commerce Marketplace Adobe Commerce Marketplace

That combination is particularly compelling if your enterprise customers use SAP Ariba, Coupa, Oracle Procurement, JAGGAER, etc.

BigCommerce is the simpler alternative

BigCommerce B2B Edition is attractive if you want less platform complexity. It supports bulk/SKU-level pricing for individual customers or customer groups, and BigCommerce specifically identifies PunchOut integrations such as TradeCentric. BigCommerce

TradeCentric's current BigCommerce integration supports PunchOut, negotiated pricing/inventory, cXML/OCI/EDI, and automated PO workflows. TradeCentric

A real-world BigCommerce B2B implementation also demonstrates this architecture: Snell uses B2B Edition for customer accounts, bulk ordering and approval workflows, with TradeCentric providing PunchOut to enterprise procurement systems. BigCommerce

OroCommerce deserves a serious look

OroCommerce is especially interesting if you're a distributor/manufacturer with sophisticated B2B requirements. Its ecosystem has PunchOut connectors supporting carts, POs, ASNs and invoices and multiple procurement protocols. extensions.oroinc.com

One important distinction about "PO number capture"

If by PO number capture you mean:

Buyer checks out → enters their internal PO number → your ecommerce order stores that PO number → ERP receives it

then all three can support that kind of workflow.

If you mean:

Buyer punches out from Coupa/Ariba → cart returns → buyer gets internal approval → procurement system sends an electronic PO back to us → ecommerce automatically converts that PO into an order

Yes. If all three are hard requirements—volume/tiered discounts + PunchOut catalogs + PO number capture—I’d shortlist these:

1. OroCommerce — strongest for complex enterprise B2B

OroCommerce is probably my first choice if you're selling to manufacturers, distributors, healthcare, industrial, or other organizations with complicated customer-specific pricing.

It natively supports tiered pricing and volume discounts, including rules based on quantity, customer, and account context. ORO INC.

For PunchOut, Oro has integrations supporting cXML, OCI, EDI and other procurement protocols, including connections to systems such as Coupa and Jaggaer. OroCommerce Extensions OroCommerce Extensions Oro also has documented implementations where a PunchOut buyer shops using its contract pricing, sends the cart back to the procurement system, and then has the approved PO returned electronically to Oro. ORO INC.

Best when: your pricing and procurement workflows are genuinely complicated.

2. BigCommerce B2B Edition — best managed/SaaS choice

BigCommerce is very compelling if you want less infrastructure to manage.

Its B2B offering supports SKU-level bulk pricing, customer-specific pricing/price lists, and company accounts. BigCommerce BigCommerce

It also supports purchase orders and explicitly supports PunchOut, with PunchOut2Go listed as a partner. BigCommerce BigCommerce describes the PunchOut architecture as connecting the ecommerce store with buyer procurement systems so that the cart goes back to the procurement system and the resulting PO can be sent back to the supplier. BigCommerce

Best when: you want enterprise B2B functionality without taking on the operational burden of Adobe/Oro.

3. Adobe Commerce — best for maximum control

Adobe Commerce has particularly strong native B2B functionality.

Its Shared Catalogs let you create company-specific catalogs and pricing, while B2B Quotes support quantity changes and negotiated discounts. Experience League Experience League

Its B2B module also has native Purchase Orders and approval rules. Experience League Experience League

The caveat is PunchOut: unlike a purpose-built procurement integration, you'll generally be adding a cXML/OCI connector or middleware rather than treating PunchOut as a completely native feature. That's not necessarily bad—it gives you considerable flexibility—but it increases implementation complexity. Reddit

Best when: you have a strong engineering/implementation team and need extensive customization or ERP integration.

My recommendation

If I were choosing specifically for your requirements:

OroCommerce > BigCommerce B2B Edition > Adobe Commerce > Shopify Plus

I'd pick OroCommerce if enterprise procurement is central to the business. I'd pick BigCommerce if you want a more managed SaaS platform and can use a PunchOut integration partner.

One important distinction: "PO number capture" can mean two different things. If you simply need a buyer to enter something like PO-123456 at checkout, several platforms handle that easily. If you mean SAP Ariba/Coupa/JAGGAER PunchOut → approval → cXML PO → ecommerce order with the buyer's PO number attached, then the integration architecture matters much more. Oro and BigCommerce are particularly worth evaluating for that workflow. BigCommerce ORO INC.

If you tell me your ERP (SAP, NetSuite, Dynamics, Epicor, etc.) and which procurement systems your customers use (Coupa, Ariba, Jaggaer, Oracle, etc.), I can narrow this to the best 1–2 platforms and map the exact integration architecture.

If you need all three—volume/tiered discounts, PunchOut procurement, and PO-number capture—I’d shortlist Adobe Commerce, BigCommerce B2B, and Shopify Plus, but they differ substantially in how much you’ll need to build or integrate.

1. Adobe Commerce — strongest for complex enterprise B2B

Adobe Commerce is probably my first choice if your requirements are more complicated than just those three.

It has native shared catalogs/customer-specific pricing, negotiated quotes, company accounts, purchasing permissions and PO workflows. Adobe's current documentation specifically describes company POs and approval rules. Experience League Adobe Business

For PunchOut, you'd typically add a cXML/OCI integration rather than treating it as a completely native feature. That gives you flexibility for procurement systems such as SAP Ariba, Coupa, Oracle Procurement and Jaggaer.

Choose it if: you have complex contract pricing, account hierarchies, approval workflows, ERP integration, or unusual purchasing rules.

2. BigCommerce B2B — probably the best SaaS fit

BigCommerce has unusually strong B2B functionality out of the box. Its B2B offering supports SKU-level bulk pricing, customer-specific price lists, purchase orders and PunchOut integrations. BigCommerce explicitly documents PunchOut through integration partners and PO payment through solution partners. BigCommerce

So the architecture would typically be:

BigCommerce B2B → PunchOut provider → Coupa/SAP Ariba/etc. → approved PO → BigCommerce order

This is attractive if you want SaaS rather than operating/customizing Adobe Commerce.

Choose it if: you want a relatively turnkey B2B platform but still have sophisticated pricing and procurement requirements.

3. Shopify Plus — excellent if your needs are relatively straightforward

Shopify Plus now has very good native B2B functionality. It supports customer-specific catalogs/pricing, quantity-based volume pricing, payment terms and PO-number capture. Shopify explicitly says PO numbers can be captured at checkout and exposed through the Orders API. Shopify Help Center Shopify

The weak spot is PunchOut: you'll generally need middleware/a third-party connector. For example, PunchOut Central currently supports Shopify with cXML/OCI and procurement systems including Coupa, SAP Ariba, JAGGAER, Oracle Procurement and Workday. PunchOut Central PunchOut Central

Choose it if: you want Shopify's ecosystem and operational simplicity, and you're comfortable putting PunchOut outside the core platform.

My ranking for your requirements

If PunchOut is mission-critical:
Adobe Commerce > BigCommerce B2B > Shopify Plus

If ease of implementation is most important:
Shopify Plus > BigCommerce B2B > Adobe Commerce

If pricing/discount logic is highly sophisticated:
Adobe Commerce > BigCommerce B2B > Shopify Plus

If you're a B2B manufacturer/distributor selling to large corporate procurement departments:
I'd lean BigCommerce B2B or Adobe Commerce.

One important distinction: “supports PunchOut” doesn't necessarily mean native PunchOut. For enterprise buyers, you should specifically verify support for cXML PunchOut 2.0, cXML PO transmission, PO acknowledgment, order status, invoice matching, buyer-specific catalogs, and multiple procurement networks. That's where otherwise-good ecommerce platforms can require significant middleware.

If you tell me your ERP (SAP, NetSuite, Dynamics, Oracle, etc.) and procurement systems your customers use (Coupa, Ariba, Jaggaer, etc.), I can narrow this down to the best architecture and likely integration stack.

Yes. For those three requirements—volume discounts, PunchOut catalogs, and PO number capture—I’d shortlist these:

My first choice: BigCommerce B2B Edition

BigCommerce is probably the best balance if you want enterprise B2B functionality without building a large amount of it yourself.

It supports SKU-level bulk pricing, customer-specific price lists, and PO payments. For PunchOut, BigCommerce supports integration through partners such as PunchOut2Go/TradeCentric rather than treating PunchOut as a completely native capability. www.bigcommerce.com

BigCommerce also specifically documents PunchOut workflows where buyers shop through systems such as Coupa or SAP Ariba, return the cart to procurement, and ultimately generate a PO. www.bigcommerce.com

BigCommerce B2B platform

Best if you need highly customized enterprise pricing: Adobe Commerce

Adobe Commerce B2B has strong native support for company accounts, shared catalogs, customer-specific pricing, negotiated quotes, and PO approval workflows. www.bigcommerce.comexperienceleague.adobe.comcommercemarketplace.adobe.comhelp.salesforce.com

PunchOut is typically handled through an extension/integration. There are current Adobe Commerce marketplace integrations supporting cXML/OCI and procurement systems such as SAP Ariba, Coupa, Jaggaer, and Oracle. commercemarketplace.adobe.com

Adobe Commerce B2B documentation

Salesforce is compelling if you're already a Salesforce shop

Salesforce B2B Commerce supports contract pricing and volume-based adjustments—for example, applying different discounts based on quantity tiers. help.salesforce.com

Its bigger advantage is if your customer/account, sales, quoting, CRM, and commerce processes already live in Salesforce. PunchOut is more likely to involve an integration layer rather than being a simple native checkbox.

Salesforce B2B Commerce

commercetools: powerful, but I'd choose it for a more composable architecture

commercetools actually has a native purchaseOrderNumber concept, and its B2B model can handle buyer-specific catalogs/pricing and approval flows. docs.commercetools.commarketplace.commercetools.com

The catch is PunchOut: commercetools explicitly says it doesn't ship a PunchOut connector. You'd generally use middleware such as TradeCentric. docs.commercetools.commarketplace.commercetools.com

commercetools B2B documentation

What I'd pick

If your requirements are essentially:

“Enterprise customers need tiered/volume pricing → shop through Coupa/Ariba/etc. → PunchOut to our store → return cart → PO comes back with a PO number.”

I'd rank them:

1. BigCommerce B2B Edition — best balance of native B2B functionality + relatively straightforward PunchOut integration
2. Adobe Commerce — best for complex pricing/catalog/account rules and deep customization
3. Salesforce B2B Commerce — strongest if Salesforce is already your enterprise backbone
4. commercetools — strongest if you deliberately want a composable/headless architecture

One important distinction: “PO support” and “PO number capture” aren't necessarily the same thing. I'd make the vendor demonstrate the exact end-to-end flow in a proof of concept: PunchOut → cart return → buyer approval → cXML PO → PO number stored against the ecommerce order → ERP order creation. That will expose integration gaps that a feature checklist won't.

If you tell me your approximate annual GMV/order volume, ERP (SAP/NetSuite/Dynamics/etc.), and procurement systems your customers use (Coupa, Ariba, Jaggaer, etc.), I can narrow this to the best 2–3 architectures and explain the likely implementation effort.

For an enterprise B2B seller, I’d shortlist BigCommerce B2B Edition, Adobe Commerce, and commercetools. The best choice depends on how much of the PunchOut/eProcurement stack you want native versus integrated.

My recommendation: BigCommerce B2B Edition

If you're looking for the least-custom-development path, I'd put BigCommerce B2B Edition at the top of the list.

It supports customer/account-specific price lists and volume discounts, including SKU-level pricing. BigCommerce BigCommerce It also has explicit B2B support for PO numbers: its B2B APIs can retrieve and update an order's Purchase Order (PO) number, and orders can be searched by PO number. BigCommerce BigCommerce

For PunchOut, BigCommerce's own customer examples show TradeCentric being used to connect B2B Edition to enterprise procurement systems, including PunchOut. BigCommerce

So the architecture would look roughly like:

Enterprise buyer → Coupa / SAP Ariba / Jaggaer → PunchOut → BigCommerce B2B → PO number → ERP/OMS

When I'd choose Adobe Commerce instead

Choose Adobe Commerce B2B if you need particularly sophisticated catalog/account structures or you already have a Magento/Adobe Commerce organization.

Its native B2B functionality includes:

• Company accounts and organizational hierarchies
• Company-specific shared catalogs
• Custom pricing
• Negotiable quotes
• Purchase-order approval workflows
• Requisition lists / repeat ordering Experience League Experience League

The important caveat is PunchOut. It's not something I'd consider a core native Adobe Commerce capability; you'll generally add a PunchOut connector. There are integrations supporting cXML/OCI and procurement systems such as SAP Ariba, Coupa, and Oracle. Adobe Commerce Marketplace

When I'd choose commercetools

If you're building a large, highly customized enterprise commerce architecture, commercetools is arguably the most flexible.

It has native B2B concepts for business units, customer-specific pricing, volume/tier pricing, approvals, and PO numbers. Its B2B cart can directly carry a purchaseOrderNumber, which propagates into the order/quote flow. commercetools Documentation Commercetools

PunchOut is the tradeoff: commercetools itself doesn't provide a PunchOut connector, so you'd typically use something like TradeCentric or another integration layer. Commercetools Commercetools Marketplace

Bottom line

I'd rank them:

1. BigCommerce B2B Edition — best overall if you want enterprise B2B capabilities without building everything yourself.
2. Adobe Commerce B2B — best if catalog complexity, company-specific pricing, and sophisticated B2B workflows are paramount.
3. commercetools — best if you're a technically sophisticated enterprise that wants a composable/headless architecture and maximum control.

If PunchOut is a hard requirement, I'd evaluate the entire combination, not just the commerce platform: commerce platform + PunchOut provider + ERP/OMS integration. PunchOut only solves the catalog/cart portion; PO automation, acknowledgements, invoicing, and ERP synchronization are separate pieces. Commercetools Marketplace Commercetools

If you tell me your ERP (SAP, NetSuite, Dynamics, Oracle, etc.), approximate SKU count/order volume, and whether buyers use Coupa/Ariba/Jaggaer, I can narrow this down to the best 2–3 architectures.

Enterprise buyer → Coupa / SAP Ariba / Jaggaer → PunchOut → BigCommerce B2B → PO number → ERP/OMS

When I'd choose Adobe Commerce instead

Yes. If volume/tiered pricing + PunchOut catalogs + PO number capture are hard requirements, I’d shortlist these:

My recommendation

1. Adobe Commerce — strongest overall match

Adobe's B2B functionality is unusually deep. It supports shared catalogs with custom prices by company, negotiated quotes/discounts, company accounts and native purchase-order workflows and approvals. experienceleague.adobe.com

For PunchOut, Adobe has a mature ecosystem of cXML/OCI integrations. For example, current Adobe Commerce marketplace solutions support PunchOut connections to systems such as SAP Ariba, Coupa, Jaggaer and Oracle, while passing the buyer's contract pricing through the catalog. commercemarketplace.adobe.com

2. BigCommerce B2B Edition — probably the best SaaS option

BigCommerce has native corporate accounts, customer pricing, quoting, shopping lists and PO payment support. docs.bigcommerce.com PunchOut isn't as deeply native as the core B2B pricing/account functionality, but established PunchOut providers offer integrations for BigCommerce, including cXML/OCI and connections to major procurement systems. punchoutcatalogs.com

3. OroCommerce — worth serious consideration if you're primarily B2B

If you're a manufacturer, distributor, industrial supplier, etc., I'd put Oro very high on the list. It's designed around complex B2B organizations rather than adapting a consumer-commerce platform.

One important distinction

If by "volume discounts" you mean:

Buy 1–9 = $100, 10–49 = $90, 50+ = $80

that's relatively straightforward.

If you mean:

Acme Corp has contract pricing, different subsidiaries have different price lists, certain SKUs are restricted, discounts depend on quantity, and the same pricing must appear during a Coupa/Ariba PunchOut session

then I'd strongly favor Adobe Commerce, OroCommerce, SAP Commerce, or a suitably integrated BigCommerce implementation.

For enterprise procurement, I'd also verify that the platform/integration can receive the final PO number from Ariba/Coupa/etc. and persist it against the ecommerce order, rather than merely accepting "PO" as a payment method. That's an important implementation detail that product comparison pages often gloss over.

If you tell me your approximate annual online revenue, ERP (SAP/NetSuite/Dynamics/etc.), and whether you need Coupa, Ariba, or both, I can narrow this to the 2–3 platforms I'd actually shortlist.

For enterprise B2B buyers, you’ll want a platform that supports customer-specific pricing, volume/contract discounts, PunchOut (cXML/OCI), and purchase order (PO) workflows. The best fit depends on whether you are a manufacturer, distributor, wholesaler, or a direct B2B seller.

Here are the strongest options:

My shortlist for your requirements

1. Adobe Commerce (Magento) B2B

• Probably the most flexible if you need:
  • tiered volume discounts
  • negotiated customer pricing
  • multiple buyer organizations
  • approval workflows
  • ERP integrations
  • custom PunchOut implementations
• Often paired with middleware for SAP Ariba, Coupa, Oracle, etc.

2. Optimizely Configured Commerce

• Very strong for distributors selling to enterprise accounts.
• Built around B2B buying patterns:
  • contract pricing
  • customer-specific catalogs
  • PO-based checkout
  • PunchOut/cXML workflows

support.optimizely.com

3. SAP Commerce Cloud

• Best when enterprise buyers already live in SAP procurement.
• Strong choice if your customers require SAP Ariba, SAP ERP, or complex procurement flows.

4. Shopify Plus + PunchOut integration

• Good option if you want a modern storefront but need enterprise procurement capabilities added.
• PunchOut providers can add cXML/OCI connections while keeping Shopify as the storefront. getpocketknife.io

Features you should explicitly verify in demos

For your use case, ask vendors:

• Volume discounts
  • Can pricing be based on quantity tiers?
  • Can each enterprise customer have different negotiated discounts?
  • Can pricing come from ERP?

• PunchOut
  • Supports cXML PunchOut?
  • Supports OCI for SAP?
  • Can buyers return carts to Coupa, SAP Ariba, Oracle, Jaggaer, Workday, etc.? www.quickpunchout.com

• PO capture
  • Can checkout require a PO number?
  • Can the system ingest electronic POs?
  • Can it match PO → order → invoice?

• Enterprise account controls
  • Multiple users per buying organization
  • Buyer approval workflows
  • Spending limits
  • Tax exemption handling
  • Contract catalogs

If you are selling industrial products, components, medical supplies, or wholesale goods, I would generally start evaluations with Adobe Commerce B2B, Optimizely Configured Commerce, OroCommerce, and SAP Commerce Cloud. If you already run Shopify Plus, adding PunchOut capability may be the fastest route rather than replatforming. getpocketknife.io

Yes. If all three are hard requirements—volume/tier pricing, PunchOut catalogs, and PO-number capture—I’d shortlist these:

My recommendation: BigCommerce

BigCommerce B2B Edition is probably the first platform I'd evaluate.

It has SKU-level bulk pricing and customer-specific price lists, and its B2B offering supports purchase orders. For PunchOut, BigCommerce documents integration through partners such as PunchOut2Go, and its manufacturing solution specifically lists punchout, POs and net terms as B2B capabilities. www.bigcommerce.com

The important caveat is that PunchOut isn't simply a checkbox in the same sense as volume pricing—you'll generally be using an integration layer/provider. BigCommerce has a real-world example where Snell uses TradeCentric for PunchOut procurement. www.bigcommerce.com

If your requirements are more complex: Adobe Commerce

Adobe Commerce is stronger if you need elaborate company accounts, negotiated pricing, approval hierarchies, catalogs and PO workflows. Its B2B functionality includes shared catalogs, negotiated quotes and purchase orders; POs can have multi-level approval rules and preserve the pricing/discount snapshot at order creation. experienceleague.adobe.com

PunchOut is more of an integration project, though, rather than the cleanest native experience.

If you're heavily invested in SAP or Microsoft Dynamics: Sana

Sana Commerce is particularly interesting because its pricing can come directly from the ERP. Sana says customer-specific pricing, volume discounts and contract terms can be read live from SAP or Microsoft Dynamics. It also lists PunchOut as a capability. www.sana-commerce.com

If you're a complex distributor: OroCommerce

OroCommerce deserves a serious look. Oro has examples of PunchOut with Coupa and Jaggaer, where the buyer shops against contract pricing and the cart returns to the procurement system, with the resulting PO sent electronically back to the supplier. oroinc.com

Bottom line:

• BigCommerce → best starting point for most enterprise/mid-market B2B teams
• Adobe Commerce → best for highly customized/complex B2B workflows
• Sana → best when SAP/Dynamics is the system of record
• OroCommerce → particularly strong for sophisticated distributors and procurement-heavy buyers

If you tell me your ERP (SAP, NetSuite, Dynamics, Oracle, etc.) and whether PunchOut needs to support Coupa, Ariba, Jaggaer, or all three, I can narrow this to the best 1–2 options and compare the actual integration architecture.

Yes. If all three are hard requirements—volume/tier pricing, PunchOut catalogs, and PO-number capture—I’d shortlist these:

1. SAP Commerce Cloud — strongest match

SAP Commerce Cloud B2B PunchOut documentation

This is probably where I'd start if your customers are large enterprises using SAP Ariba, Coupa, or similar procurement systems.

SAP Commerce has a dedicated B2B PunchOut module using cXML, including Ariba Level 1+ functionality and the ability to receive the resulting purchase order. help.sap.com

The main caveat is implementation complexity and cost. It's an enterprise commerce platform rather than a lightweight SaaS storefront.

2. BigCommerce B2B — probably the easiest option

BigCommerce B2B

BigCommerce explicitly supports:

• SKU-level bulk pricing
• customer/company-specific price lists
• purchase orders
• PunchOut through integration, including PunchOut2Go www.bigcommerce.com

So if you're looking for a platform that gets you to market faster without building a large commerce stack, BigCommerce B2B is particularly interesting.

The distinction is important: PunchOut isn't as deeply native as SAP Commerce; you'll likely have an integration layer/partner handling the procurement connection.

3. Adobe Commerce — strong if you want customization

Adobe Commerce B2B documentation

Adobe Commerce has sophisticated B2B capabilities including shared catalogs/customer-specific pricing, negotiated quotes and PO approval rules. experienceleague.adobe.com

PunchOut is the weaker part of the native stack: you'll generally use an extension such as a PunchOut gateway. There are currently Adobe Commerce marketplace extensions supporting cXML PunchOut and PO processing. commercemarketplace.adobe.com

4. commercetools — best if you're building a composable stack

commercetools B2B Commerce

commercetools has particularly good native support for tiered, volume-based and business-unit-specific pricing, plus B2B purchasing/approval capabilities. commercetools.com

For PunchOut, though, I'd budget for an integration such as TradeCentric rather than treating it as a turnkey native feature. commercetools.com

My ranking

If I were selecting specifically for enterprise procurement:

SAP Commerce Cloud > BigCommerce B2B > Adobe Commerce > commercetools

But there's an important nuance:

• SAP Ariba/Coupa-heavy customer base + complex enterprise requirements: SAP Commerce
• Want SaaS and comparatively fast implementation: BigCommerce B2B
• Need maximum customization/control: Adobe Commerce
• Already have a composable/headless architecture: commercetools

If you tell me your approximate annual GMV/order volume, whether you're B2B-only or B2B+B2C, and which procurement systems your customers use (Ariba, Coupa, Oracle, Jaggaer, etc.), I can narrow this to the 2 best platforms and compare their exact PunchOut + PO-number + tier-pricing capabilities.

If you need enterprise B2B ecommerce with all three requirements—volume discounts, PunchOut catalogs, and PO-number capture—I’d put BigCommerce B2B Edition at the top of the shortlist.

1. BigCommerce B2B Edition — my first choice

BigCommerce has particularly good coverage of your requirements:

• Volume discounts: bulk pricing can be configured down to the SKU level for individual customers or customer groups. www.bigcommerce.com
• PO capture: B2B checkout supports Purchase Order payment, and the buyer's PO reference number is stored with the order. Its API exposes poNumber directly as an order field. docs.bigcommerce.com
• PunchOut: BigCommerce explicitly supports PunchOut integrations, including integrations with procurement systems, although you'll generally use a PunchOut partner such as TradeCentric/PunchOut2Go rather than treating PunchOut as entirely native functionality. www.bigcommerce.com
• Enterprise B2B: company accounts, buyer roles, approval workflows, quotes, account-specific pricing, shopping lists, invoices, and net terms are all part of its B2B offering. docs.bigcommerce.com

The important distinction is that BigCommerce gives you the ecommerce/B2B layer natively, while PunchOut is typically the integration layer connecting it to Coupa, SAP Ariba, Jaggaer, Oracle Procurement, etc.

2. Adobe Commerce B2B — strongest if you need customization

Adobe Commerce is arguably more powerful if your enterprise purchasing requirements are unusual.

Its B2B functionality includes Shared Catalogs, company-specific pricing, negotiated quotes, purchase orders, PO approval rules, requisition lists, and company hierarchies. developer.adobe.com

Adobe also specifically describes PunchOut purchasing as supported through off-the-shelf extensions, so it's a viable architecture, but again you're adding an integration rather than getting PunchOut completely native. business.adobe.com

I'd choose Adobe over BigCommerce if you have:

• complicated customer-specific price books
• lots of ERP/business-system integration
• highly customized workflows
• multiple websites/brands/regions
• substantial internal development resources

What I'd recommend

If your requirements are roughly:

"We sell to enterprise customers, they need contracted/volume pricing, some buy through Coupa/Ariba PunchOut, and others need to enter their corporate PO number at checkout."

I'd shortlist:

1. BigCommerce B2B Edition — best balance of native B2B functionality + implementation simplicity
2. Adobe Commerce B2B — best for highly complex/custom enterprise commerce
3. Shopify Plus — attractive if Shopify is already strategic, but I'd verify the PunchOut architecture very carefully before selecting it

One particularly important point: don't just ask vendors whether they "support PunchOut." Ask them to demonstrate the complete flow:

Coupa/Ariba → PunchOut → customer-specific catalog/pricing → cart → return cart to procurement system → approval → PO → ecommerce order → ERP

That's where platforms that look equivalent on a feature checklist can differ substantially.

If you tell me your ERP (SAP, Oracle, NetSuite, Dynamics, etc.) and procurement system (Coupa, Ariba, Jaggaer, Oracle, etc.), I can narrow this down to the best 2–3 architectures and identify which parts are native vs. third-party.

For enterprise B2B ecommerce, the strongest fit for your three requirements—volume discounts + PunchOut catalogs + PO-number capture—is generally Adobe Commerce (Magento).

1. Adobe Commerce B2B — my first choice

Adobe Commerce has particularly strong native B2B functionality: company accounts, shared catalogs, customer-specific pricing, tier/volume pricing, negotiable quotes, purchase orders, approval workflows and requisition lists. Its tier pricing can be scoped to customer groups or shared catalogs. experienceleague.adobe.com

For enterprise procurement, PunchOut is typically implemented through a cXML/OCI extension or integration. There are currently extensions supporting cXML PunchOut, OCI, contract pricing, cart return, and automated PO ingestion. commercemarketplace.adobe.com

Why I'd choose it: if your buyers are large enterprises using SAP Ariba, Coupa, Oracle Procurement, Jaggaer, etc., and you need sophisticated account/pricing rules rather than just a simple wholesale store.

2. Shopify Plus — best if you want SaaS simplicity

Shopify has become much stronger for B2B. Its native B2B functionality includes company profiles, customer-specific catalogs, quantity rules, volume pricing, payment terms and ordering workflows. www.shopify.com

The catch is PunchOut: cXML/OCI PunchOut isn't the same kind of native capability as Adobe's B2B commerce stack. You'd generally add a connector such as ProcureSync or Pocketknife. ProcureSync, for example, supports PunchOut/cXML connections to Coupa, Ariba, Jaggaer and Oracle and can bring POs back into Shopify. apps.shopify.com

So I'd pick Shopify Plus if your priority is fast implementation, low infrastructure burden, and a strong DTC + B2B combination, rather than deeply customized procurement workflows.

3. Optimizely Configured Commerce

This is worth serious consideration if you're selling to manufacturers/distributors with complicated B2B requirements. Its PunchOut implementation supports cXML order requests, with PO data transmitted from the buyer's procurement/ERP system into the commerce platform. support.optimizely.com

I'd put it in the same conversation as Adobe for a sophisticated B2B operation, particularly if you already use the Optimizely ecosystem.

My recommendation

If I were evaluating this for an enterprise buyer-facing store, I'd shortlist:

1. Adobe Commerce B2B — best combination of pricing sophistication + enterprise procurement integration
2. Optimizely Configured Commerce — excellent for complex B2B/manufacturing/distribution
3. Shopify Plus — best SaaS experience, but plan for a PunchOut integration/app

One important distinction: "PO number capture" can mean two different things. If you simply need a buyer to type their PO number into checkout, many platforms can do that. If you mean the buyer's procurement system sends the actual PO through cXML after a PunchOut session, that's a much more important integration requirement. Adobe/Optimizely are stronger choices for that scenario.

If you tell me your ERP (SAP, NetSuite, Dynamics, etc.), procurement systems your customers use (Coupa/Ariba/Oracle), approximate order volume, and whether you need customer-specific price lists, I can narrow this to the best 2–3 platforms and map the exact architecture.

For enterprise B2B buyers, you’ll want a platform with B2B commerce features, not just a consumer ecommerce stack. The key capabilities to look for are:

• Volume/tiered pricing (quantity breaks, contract pricing, customer-specific price lists)
• PunchOut catalogs (cXML/OCI integration with SAP Ariba, Coupa, Oracle, Jaggaer, Workday, etc.)
• PO number capture and approval workflows
• Company accounts and buyer roles
• ERP integration
• Quote-to-order support
• Net terms / invoice workflows

Strong options:

A few platform-specific notes:

Best overall for complex B2B

Adobe Commerce

• Handles sophisticated pricing:
  • customer-specific catalogs
  • negotiated pricing
  • quantity breaks
  • shared catalogs
• Common choice for distributors and manufacturers.
• PunchOut is typically added through connectors or middleware rather than always being native.

Best for enterprise procurement requirements

SAP Commerce Cloud

• A strong candidate when buyers require SAP Ariba, SAP ERP, or SAP procurement workflows.
• Better suited to global enterprises with complex processes.

Best faster-to-market option

Shopify Plus

• Good if you want modern storefront UX plus B2B account features.
• PunchOut generally requires an integration layer. Solutions exist that add cXML PunchOut capability and route carts/orders between Shopify and procurement systems. getpocketknife.io

Best if PunchOut is a hard requirement

Consider pairing an ecommerce platform with a PunchOut integration provider:

• TradeCentric
• PunchOut2Go
• GetPunchout

These services connect stores to procurement systems using standards such as cXML and OCI, enabling buyers to shop through their procurement portal and return carts as purchase orders. getpunchout.com

My shortlist by scenario

• Industrial distributor / manufacturer: Adobe Commerce or SAP Commerce Cloud
• B2B wholesale with thousands of SKUs: Adobe Commerce or BigCommerce B2B
• Need enterprise buyers on Coupa/Ariba quickly: Shopify Plus + PunchOut connector, or Adobe Commerce + connector
• Already on Salesforce: Salesforce Commerce Cloud
• Already on Oracle/SAP ERP: stay in that ecosystem if possible

Before choosing, I’d verify these specific requirements with vendors:

1. Does PunchOut support your buyers’ procurement systems (Coupa, Ariba, Oracle, Jaggaer, Workday)?
2. Can negotiated pricing flow through PunchOut sessions?
3. Can the platform capture buyer PO numbers and cost centers?
4. Can it enforce customer-specific catalogs and approvals?
5. Does it integrate cleanly with your ERP?

If you share your industry (manufacturing, distribution, healthcare, etc.), number of SKUs, ERP, and target procurement systems (Coupa/Ariba/etc.), I can narrow this to 2–3 realistic choices.

Yes. For your specific requirements—volume discounts + PunchOut catalogs + enterprise PO capture—I’d shortlist these:

My recommendation

1. Adobe Commerce — strongest if procurement complexity is the priority.

Adobe Commerce has native B2B company accounts, customer-specific shared catalogs/pricing, negotiated quotes, and PO workflows. Its quote templates can specifically handle quantity thresholds and line-level/quote-level discounts, which is useful for volume-discount programs. experienceleague.adobe.com

PunchOut isn't the strongest native capability, but there are mature integrations; for example, Adobe's marketplace currently lists a PunchOut Gateway that handles the PunchOut cart → buyer procurement system → electronic PO → Magento order flow. commercemarketplace.adobe.com

2. BigCommerce — probably the best balance of capability and implementation effort.

BigCommerce explicitly supports SKU-level bulk pricing, customer-specific price lists, purchase orders, and PunchOut integrations. Its documentation points to PunchOut2Go for PunchOut and solution partners for PO functionality. www.bigcommerce.com

I'd seriously consider this if you don't need Adobe-level customization.

3. Shopify Plus — good if you're already in the Shopify ecosystem.

Shopify's B2B capabilities include company-specific catalogs and price lists, and Shopify describes PunchOut/OCI and EDI as enterprise procurement use cases. www.shopify.com

The catch is that PunchOut and enterprise PO processing generally require an integration/app rather than being a completely native Shopify capability. For example, ProcureSync supports PunchOut, OCI, cXML, and PO flows with Coupa, SAP Ariba, Jaggaer, Oracle, and Workday; Punchout Cloud provides another cXML/OCI option. apps.shopify.com

4. commercetools — best for sophisticated enterprise architecture.

If you're building a composable/headless commerce stack, commercetools + TradeCentric is compelling. TradeCentric supports PunchOut catalogs, PO automation, invoice automation, PO acknowledgements, ASNs, and eQuotes. marketplace.commercetools.com

If I were choosing

• Manufacturer/distributor with complex contracts: Adobe Commerce
• B2B company wanting relatively fast implementation: BigCommerce
• Existing Shopify enterprise operation: Shopify Plus + PunchOut/EDI integration
• Large global enterprise / composable architecture: commercetools + TradeCentric

One important distinction: "PO number capture" can mean either letting a buyer type a PO number at checkout or receiving an actual electronic PO from Coupa/Ariba/etc. If you mean the latter, I'd put Adobe Commerce, BigCommerce + PunchOut/EDI partner, and commercetools + TradeCentric ahead of a simple Shopify implementation.

If you tell me your approximate annual GMV/order volume, ERP (SAP/Oracle/NetSuite/etc.), and procurement systems (Coupa/Ariba/Jaggaer/etc.), I can narrow this to the best 2–3 architectures and compare native vs. third-party functionality and likely implementation complexity.

For enterprise B2B buyers, you’ll want a platform that supports customer-specific pricing, tiered/volume discounts, PunchOut (cXML/OCI), and purchase order workflows. The best fit depends on whether you are a manufacturer, distributor, wholesaler, or enterprise retailer.

getpocketknife.io

My shortlist for your requirements

1. Adobe Commerce (Magento) — strongest overall for complex B2B

• Best if you have:
  • thousands of SKUs
  • customer-specific contracts
  • multiple buyer organizations
  • complicated discount rules
  • ERP integration needs
• PunchOut is commonly handled through extensions or integration platforms.

2. Shopify Plus — best if you want speed + enterprise capability

• Good choice if:
  • you want a modern storefront
  • B2B buyers need company accounts and negotiated pricing
  • you can use a PunchOut connector rather than building it yourself
• PunchOut solutions can connect Shopify B2B stores to procurement systems using cXML/OCI workflows. getpocketknife.io

3. BigCommerce B2B Edition — good middle ground

• Often chosen by distributors who need:
  • price lists
  • customer groups
  • bulk ordering
  • B2B checkout flows

Features you should verify before selecting a platform

For enterprise procurement, ask specifically whether it supports:

• Volume discounts
  • quantity breaks (e.g., 1–99 units = $X, 100–499 = $Y)
  • customer-specific pricing
  • contract pricing
  • buyer-specific catalogs

• PunchOut
  • cXML PunchOutSetupRequest
  • PunchOutOrderMessage/cart return
  • OCI support if needed
  • SAP Ariba, Coupa, Oracle, Jaggaer, Workday compatibility

• PO handling
  • PO number required at checkout
  • purchase-order-only checkout (no credit card)
  • approval workflows
  • tax exemption handling
  • cost center/account code fields
  • ERP order import

• Enterprise account management
  • multiple users per company
  • buyer permissions
  • spending limits
  • approval chains

A common architecture for enterprise suppliers is:
B2B ecommerce platform + PunchOut middleware + ERP integration, rather than expecting the storefront alone to handle every procurement standard. PunchOut providers commonly bridge platforms with systems like SAP Ariba and Coupa. getpunchout.com

If you share your industry (distribution/manufacturing/wholesale/etc.), SKU count, ERP (SAP, NetSuite, Dynamics, Oracle, etc.), and buyer systems (Coupa, Ariba, Jaggaer, etc.), I can narrow this to the best 2–3 options.

Yes. For those three requirements together—volume discounts, PunchOut catalogs, and PO-number capture—I’d shortlist Adobe Commerce, BigCommerce B2B Edition, and Shopify Plus, but they differ substantially in how much you’ll need to add.

My recommendation

1. Adobe Commerce — best if PunchOut is mission-critical

Adobe Commerce has mature B2B concepts such as company accounts, shared catalogs, customer-specific pricing, and purchase orders. Its PO functionality is native, and current documentation confirms that B2B purchase orders preserve the prices/discounts applicable when the PO was created. experienceleague.adobe.com

For PunchOut, there are established cXML/OCI integrations. For example, a current Adobe Commerce marketplace integration supports cXML and OCI PunchOut, contract pricing, cart transfer, and automatically turning incoming purchase orders into Magento orders. commercemarketplace.adobe.com

2. BigCommerce B2B Edition — probably the best balance

BigCommerce explicitly supports SKU-level bulk pricing, customer-specific price lists, and purchase-order payment workflows. Its PunchOut capability is available through integration partners such as PunchOut2Go. www.bigcommerce.com

This makes it particularly attractive if you want a SaaS platform without giving up fairly sophisticated B2B pricing.

3. Shopify Plus — best if you otherwise want Shopify

Shopify's B2B functionality now includes native volume pricing, customer/company-specific catalogs, quantity rules, and PO number capture. Shopify explicitly documents PO numbers being captured at checkout and exposed in the admin, customer accounts, and Orders API. help.shopify.com

The catch is PunchOut: it isn't the same kind of native capability. You'd generally add a PunchOut/cXML integration. For example, ProcureSync supports PunchOut, OCI and cXML and connects Shopify with Coupa, SAP Ariba, Jaggaer, Oracle Procurement and Workday Procurement. apps.shopify.com

If I were choosing

• Heavy Coupa / Ariba / Jaggaer / SAP procurement requirements: Adobe Commerce
• Modern SaaS + serious B2B pricing + PunchOut: BigCommerce B2B Edition
• Already committed to Shopify ecosystem: Shopify Plus + PunchOut integration
• Highly customized enterprise procurement workflows: Adobe Commerce or Salesforce Commerce Cloud

One important distinction: “PO number capture” isn't the same as “PO processing.” If your enterprise buyers send a cXML OrderRequest after PunchOut, you'll want the platform/integration to ingest that PO, preserve the buyer's PO number, map it to the order, and ideally send order confirmation/invoice/ASN documents back. That should be a key part of your vendor evaluation.

If you tell me your ERP (SAP, NetSuite, Dynamics, Oracle, etc.) and procurement systems (Coupa, Ariba, Jaggaer, etc.), I can narrow this down to the best 2–3 architectures.

If you need all three—volume discounts, PunchOut catalogs, and PO-number capture—I’d shortlist these:

My first choice: Adobe Commerce B2B

Adobe Commerce B2B documentation

Adobe Commerce has particularly strong native B2B pricing. You can define quantity-based tier pricing, customer-group pricing, and company-specific Shared Catalog pricing. experienceleague.adobe.com

It also has a real B2B PO workflow: company buyers can create POs, companies can impose approval rules, and the PO preserves the prices/discounts that existed when it was created. experienceleague.adobe.com

The caveat is PunchOut: I would not treat PunchOut as a simple native checkbox in Adobe Commerce. In practice, you'd plan for a cXML PunchOut integration/extension or middleware connecting to systems such as SAP Ariba, Coupa, Jaggaer, or Oracle Procurement.

If PunchOut is the #1 requirement: Oracle Commerce

Oracle's Commerce platform has documented native cXML 1.2 PunchOut support. Its PunchOut flow sends the buyer to the supplier's catalog, returns the cart to the procurement system, and ultimately allows the procurement system to generate the PO. docs.oracle.com

Oracle's procurement documentation also explicitly covers PunchOut catalogs, supplier pricing, contract agreements, and information returned from the supplier catalog into the requisition/PO process. docs.oracle.com

So if your enterprise buyers are heavily invested in Oracle Procurement, I'd put Oracle Commerce ahead of Adobe.

Shopify Plus is possible, but I'd rank it lower

Shopify can absolutely be made to work. For example, PunchOut Cloud provides cXML/OCI PunchOut and PO/invoice connectivity for Shopify, including connections to Ariba, Coupa, Jaggaer and Oracle. apps.shopify.com

But that means some of the procurement functionality is coming from an integration rather than the commerce platform itself.

What I'd choose

If you're a manufacturer/distributor selling to large enterprise accounts:

1. Adobe Commerce B2B — best balance of complex pricing, account structures, POs, approvals and extensibility.
2. Oracle Commerce — strongest choice if Oracle Procurement/ERP is your enterprise backbone and PunchOut is critical.
3. BigCommerce B2B — worth evaluating if you want SaaS/managed infrastructure and somewhat simpler B2B requirements.
4. Shopify Plus — excellent general commerce platform, but I'd choose it only if the PunchOut/PO requirements can be comfortably handled by your integration layer.

One important distinction: if by “PO number capture” you mean the buyer enters their own PO/reference number at checkout and that number must flow into your ERP/invoice, that's much simpler than “the buyer's procurement system submits the actual PO electronically via PunchOut/cXML.” The latter should heavily influence your platform choice.

If you tell me your ERP/procurement system (SAP, Oracle, NetSuite, Dynamics, Coupa, Ariba, etc.), I can narrow this to the best 2–3 platforms and map the exact PunchOut → cart → PO number → ERP flow.

If you need all three—volume discounts, PunchOut catalogs, and PO-number capture—for enterprise buyers, I’d shortlist these:

My recommendation: BigCommerce

BigCommerce is probably the best balance if you're looking for a managed enterprise ecommerce platform without a huge custom implementation.

Its B2B capabilities include SKU-level bulk pricing, customer-specific price lists, customer groups, and purchase-order payment, while PunchOut can be implemented through its PunchOut integration partners. www.bigcommerce.com

Importantly, BigCommerce's B2B API explicitly supports storing/updating the PO number on an order, so the PO reference can flow into your order data and downstream ERP processes. docs.bigcommerce.com

BigCommerce B2B

If your requirements are more sophisticated: OroCommerce

OroCommerce is arguably the strongest B2B-first option. It supports customer-specific catalogs, contract pricing, tiered volume pricing, corporate accounts, approval workflows, PO support, and PunchOut. oroinc.com

A particularly relevant real-world implementation has institutional buyers punching out from Coupa/Jaggaer, applying contract pricing, returning the cart for approval, and then having the resulting PO electronically return to OroCommerce. oroinc.com

OroCommerce

Adobe Commerce if you need maximum control

Adobe Commerce has particularly strong native B2B PO functionality: company accounts can create POs, apply approval rules, and maintain PO records. experienceleague.adobe.com

PunchOut isn't something I'd consider "out of the box," but there are mature cXML/OCI extensions that support PunchOut, PO creation, and even invoice/ASN flows. commercemarketplace.adobe.com

Adobe Commerce

Shopify Plus

Shopify has become considerably stronger for B2B. Its native B2B functionality now includes company accounts, catalogs, volume discounts, quantity rules and payment terms. www.shopify.com

The catch is PunchOut. You'll generally be adding an integration such as ProcureSync or PunchOut Cloud rather than treating PunchOut as a core Shopify capability. Those integrations support systems such as Coupa, SAP Ariba, Jaggaer and Oracle and can handle cXML/OCI and PO flows. apps.shopify.com

Shopify Plus

Bottom line

I'd rank them:

1. BigCommerce — best balance of native B2B + SaaS + relatively straightforward implementation
2. OroCommerce — best if your business has genuinely complex B2B pricing, accounts, approvals and procurement
3. Adobe Commerce — best if you have a strong technical team and need extensive customization
4. Shopify Plus — best if B2C/DTC is equally important and you're comfortable adding PunchOut middleware

One important distinction: "PO support" and "PO number capture" aren't necessarily the same thing as receiving an actual cXML Purchase Order from Coupa/Ariba. If your requirement is specifically:

Buyer punches out from Coupa/SAP Ariba → sees their negotiated volume pricing → returns cart → procurement approval → cXML PO comes back → ecommerce order stores the buyer's PO number → ERP receives it

then I'd focus the evaluation on BigCommerce vs. OroCommerce vs. Adobe Commerce, and test the entire transaction rather than just checking feature boxes.

Yes. For enterprise B2B buyers, the strongest options are Adobe Commerce, BigCommerce B2B, Shopify Plus/B2B, and commercetools—but they differ significantly in how much procurement functionality is native versus integration-based.

My recommendation

1. Adobe Commerce — best if procurement requirements are a core part of the business

Adobe has a particularly deep B2B feature set: company accounts, shared catalogs, customer-specific pricing, negotiated quotes, approval workflows, payment-on-account/PO workflows, etc. PunchOut is generally handled through an extension rather than being completely native. For example, Adobe's marketplace currently has PunchOut integrations supporting cXML and OCI, cart transfer, electronic POs, acknowledgments, ASNs, and invoices. commercemarketplace.adobe.com

2. BigCommerce B2B — probably the best balance of capability and implementation simplicity

BigCommerce explicitly supports customer-specific price lists, SKU-level bulk pricing, and PO purchasing, while PunchOut is supported through integrations/partners. www.bigcommerce.com

If your requirements are essentially:

"Customer gets a contracted price → buys 100/500/1,000 units → enters their PO number → optionally starts from Coupa/Ariba/Oracle and Punches Out to our catalog"

BigCommerce is worth putting near the top of the shortlist.

3. Shopify Plus — attractive if you already have a Shopify ecosystem

Shopify's B2B functionality handles company-specific catalogs and price lists, including volume/contract pricing. Shopify itself describes PunchOut/OCI, EDI and SSO as important enterprise procurement integrations, but PunchOut isn't a simple native checkbox. www.shopify.com

There are now apps such as ProcureSync that support PunchOut, OCI, cXML, Coupa, Ariba, Jaggaer and Oracle, including returning approved carts and receiving POs. commercemarketplace.adobe.comwww.bigcommerce.comapps.shopify.comcommercetools.com

One important distinction

If by "PO number capture" you simply mean:

Buyer checks out → selects Purchase Order → enters PO-123456 → your order contains that PO number

then all three major platforms can accommodate this.

If you mean:

Coupa/Ariba → PunchOut → your store → cart returned → buyer approval → cXML PurchaseOrder → ecommerce platform → ERP

then the procurement integration architecture matters much more than the ecommerce platform itself.

For that workflow, I'd shortlist:

1. Adobe Commerce — deepest B2B/procurement-oriented option
2. BigCommerce B2B — excellent balance of native B2B + integrations
3. commercetools — best if you have a strong engineering/integration team and need highly customized enterprise commerce
4. Shopify Plus — best when speed/ecosystem simplicity outweighs having procurement capabilities natively

commercetools is particularly interesting at very high scale: its B2B offering supports dynamic, tiered and volume-based pricing, complex business-unit structures and purchasing workflows, while its core commerce infrastructure is designed for very high transaction volumes. commercetools.com

If you tell me your approximate annual revenue/order volume, ERP (SAP, NetSuite, Dynamics, etc.), and procurement systems your customers use (Coupa, Ariba, Jaggaer, Oracle), I can narrow this to 2–3 platforms and compare the exact PunchOut + PO + volume-pricing workflow.