ChatGPT answers, unedited

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.