ChatGPT answers, unedited

For strong security and compliance controls around payments and customer data, I would generally shortlist Shopware, Adobe Commerce/Magento Open Source, and Saleor/other headless platforms rather than choosing purely on ease of setup. The right choice depends on your compliance burden, engineering capability, and operating model.

My recommendation hierarchy

www.shopware.com

Best overall choice: Shopware (for many compliance-focused organizations)

Shopware is often a strong fit when you need:

• Self-hosting and infrastructure control
• Modern API architecture
• Role-based access controls
• Encryption and secure deployment practices
• Strong privacy capabilities
• Enterprise commerce features

Shopware documents support for security controls such as encryption in transit/rest, access controls, and compliance-oriented deployments including SOC 2, ISO 27001, and GDPR-related capabilities (depending on deployment model). www.shopware.com

A typical secure Shopware deployment would include:

• Hosted payment provider (avoid storing card data)
• WAF + DDoS protection
• Private database networking
• Secrets management
• Centralized logging/SIEM
• Vulnerability scanning
• Regular penetration testing
• Strict admin MFA and least-privilege roles

Choose Magento/Adobe Commerce if you are enterprise-scale

Magento Open Source or Adobe Commerce is a better choice when you have:

• Hundreds of thousands of SKUs
• Complex pricing rules
• Multi-brand/multi-store operations
• ERP/CRM integration needs
• Dedicated security engineering resources

The downside is that self-hosted Magento puts more responsibility on your team: patching, infrastructure hardening, monitoring, and secure customization practices become critical. swingintel.com

Be cautious with WooCommerce for high-compliance environments

WooCommerce can be secure, but the platform itself does not make compliance automatic. Your security posture depends heavily on:

• WordPress hosting quality
• Plugin governance
• Patch management
• Theme/plugin review
• Admin access controls

WooCommerce recommends using hosted payment gateways so your environment avoids directly handling raw cardholder data, reducing PCI scope. woocommerce.com

For a regulated business handling sensitive customer information, I would avoid a large WooCommerce plugin stack unless you have strong application security processes.

Compliance architecture matters more than the platform

Regardless of platform, I would require:

Payment security

• Use tokenized payments through providers such as Stripe, Adyen, or Braintree
• Do not store card numbers
• Segment payment-related systems
• Maintain PCI DSS controls

Customer data protection

• Encryption at rest and in transit
• Data retention policies
• Customer deletion/export workflows
• Audit trails
• Strong IAM controls
• MFA everywhere

Operational security

• Secure SDLC
• Dependency scanning
• Vulnerability management
• Logging and monitoring
• Incident response plan
• Regular penetration testing

If I were selecting for a security-conscious company

My default shortlist would be:

1. Shopware → best balance of open source flexibility + enterprise controls
2. Magento Open Source / Adobe Commerce → if you have enterprise-scale complexity
3. Saleor or another headless platform → if your engineering team wants maximum control

I would avoid selecting based only on "PCI compliant" marketing claims—the platform, hosting, payment flow, integrations, and operational controls together determine your actual compliance posture.

If strong security and compliance for payments + customer data are the priorities, I’d shortlist Shopware and Magento Open Source, with Shopware as my default choice for a new implementation.

My recommendation: Shopware

shopware.com is particularly attractive because its current security posture includes encryption at rest and in transit, access controls, ISO 27001 certification, and SOC 2 Type II alignment for hosted environments. Shopware Shopware

More importantly for payments, Shopware recommends keeping sensitive payment processing outside the commerce environment through external payment integrations. That can substantially reduce your PCI DSS scope compared with handling cardholder data yourself. Shopware

When I'd choose Magento instead

Adobe's Magento Open Source is arguably the stronger choice if you need extreme customization or already have a Magento engineering organization.

It has mature security capabilities including 2FA, CAPTCHA/reCAPTCHA, security scanning, encryption mechanisms, CSP, and extensive PCI guidance. Experience League Experience League Adobe explicitly prohibits storing cardholder data in Commerce and recommends keeping it outside the platform using tokenization/encryption/etc. Experience League

The downside is operational complexity: with the open-source/self-hosted version, your organization is responsible for infrastructure hardening, patching, extensions, monitoring, backups, and much of the compliance evidence.

If budget permits, Adobe Commerce Cloud is a different proposition: Adobe provides PCI/SOC 2 infrastructure controls, managed security capabilities, WAF/DDoS protection, and vulnerability scanning, although your custom code and processes remain your responsibility. Experience League Experience League

The architecture matters more than the platform

For a security-conscious deployment, I would design it roughly like this:

Customer → CDN/WAF → Shopware → payment provider

rather than:

Customer → Shopware → database containing credit-card information

Use a PCI-compliant payment processor and tokenization, so your ecommerce database never contains raw PAN/card data. This dramatically reduces the sensitive-data footprint and PCI exposure.

I'd also require:

• MFA/strong authentication for administrators
• RBAC and least privilege
• encrypted data at rest and TLS everywhere
• centralized audit logging/SIEM integration
• automated vulnerability/dependency scanning
• rapid security-patch process
• signed/approved extensions only
• secrets management rather than credentials in configuration files
• database and backup encryption
• data retention/deletion policies
• customer-data export/deletion capabilities
• WAF, bot protection and DDoS mitigation
• regular penetration testing
• documented PCI DSS responsibility matrix
• separate production/staging environments

Bottom line: For a new project where you specifically want open source + strong security/compliance + manageable operational burden, I'd choose Shopware. I'd choose Magento Open Source instead when deep customization and a mature Magento engineering ecosystem outweigh the additional security/operations burden.

If you tell me your company size, expected annual order volume, cloud preference (AWS/Azure/GCP/on-prem), payment processor, and whether you need PCI DSS/SOC 2/ISO 27001/GDPR, I can narrow this to a concrete architecture and platform choice.

When I'd choose Magento instead

Adobe's Magento Open Source is arguably the stronger choice if you need extreme customization or already have a Magento engineering organization.

It has mature security capabilities including 2FA, CAPTCHA/reCAPTCHA, security scanning, encryption mechanisms, CSP, and extensive PCI guidance. Experience League Experience League Adobe explicitly prohibits storing cardholder data in Commerce and recommends keeping it outside the platform using tokenization/encryption/etc. Experience League

The downside is operational complexity: with the open-source/self-hosted version, your organization is responsible for infrastructure hardening, patching, extensions, monitoring, backups, and much of the compliance evidence.

If budget permits, Adobe Commerce Cloud is a different proposition: Adobe provides PCI/SOC 2 infrastructure controls, managed security capabilities, WAF/DDoS protection, and vulnerability scanning, although your custom code and processes remain your responsibility. Experience League Experience League

The architecture matters more than the platform

For a security-conscious deployment, I would design it roughly like this:

Customer → CDN/WAF → Shopware → payment provider

rather than:

Customer → Shopware → database containing credit-card information

Use a PCI-compliant payment processor and tokenization, so your ecommerce database never contains raw PAN/card data. This dramatically reduces the sensitive-data footprint and PCI exposure.

I'd also require:

• MFA/strong authentication for administrators
• RBAC and least privilege
• encrypted data at rest and TLS everywhere
• centralized audit logging/SIEM integration
• automated vulnerability/dependency scanning
• rapid security-patch process
• signed/approved extensions only
• secrets management rather than credentials in configuration files
• database and backup encryption
• data retention/deletion policies
• customer-data export/deletion capabilities
• WAF, bot protection and DDoS mitigation
• regular penetration testing
• documented PCI DSS responsibility matrix
• separate production/staging environments

Bottom line: For a new project where you specifically want open source + strong security/compliance + manageable operational burden, I'd choose Shopware. I'd choose Magento Open Source instead when deep customization and a mature Magento engineering ecosystem outweigh the additional security/operations burden.

If you tell me your company size, expected annual order volume, cloud preference (AWS/Azure/GCP/on-prem), payment processor, and whether you need PCI DSS/SOC 2/ISO 27001/GDPR, I can narrow this to a concrete architecture and platform choice.

If strong security and compliance controls for payments and customer data are the priority, I’d shortlist Saleor and Shopware, with Saleor as my default choice for a new enterprise/headless build.

My recommendation: Saleor

Saleor is particularly attractive when security is a first-class requirement because its API-first architecture lets you keep the storefront separate from the commerce/data layer. It also has strong enterprise-oriented capabilities around multi-channel commerce, warehouses, and B2B. Current comparisons put it ahead of Medusa when advanced enterprise commerce requirements matter. ossalt.com

But there's an important distinction: don't treat "open source" as meaning "PCI compliant out of the box." Your deployment, payment integration, infrastructure, access controls, logging, vulnerability management, backups, and operational processes determine much of your actual compliance posture.

For payments, I'd architect it so that your platform never stores raw card numbers. Use a PCI-compliant payment processor and tokenized/hosted payment components, minimizing your PCI DSS scope.

Shopware is worth serious consideration

If you want more of an enterprise commerce suite rather than a developer-centric headless engine, Shopware deserves a close look. Its current security documentation describes ISO/IEC 27001:2022 certification and SOC 2 Type II alignment for hosted environments, along with encryption and access-control measures. www.shopware.com

What I'd require regardless of platform

For a security/compliance-heavy deployment, I'd make these architectural requirements non-negotiable:

• Tokenized payments — no raw PAN/card data in your database.
• PCI DSS responsibility matrix — explicitly document which controls belong to the platform, cloud provider, payment processor, and your team.
• Encryption at rest and in transit.
• MFA + SSO/RBAC for administrative access.
• Immutable/auditable logs for customer-data and payment-related actions.
• Secrets management, not credentials in environment files or source control.
• Automated dependency and container vulnerability scanning.
• Rapid security-patch process and an inventory/SBOM of deployed software.
• Database backups with encryption and tested restoration.
• PII minimization and retention/deletion policies.
• Network segmentation between storefront, commerce APIs, databases, workers, and administrative systems.
• WAF/rate limiting/bot protection at the edge.
• Regular penetration testing and incident-response procedures.

Bottom line: If you have a capable engineering/security team and want an open-source, API-first platform, I'd choose Saleor. If your organization puts especially heavy weight on documented enterprise security/compliance programs and wants a more conventional commerce suite, I'd evaluate Shopware alongside it. I'd choose Medusa when developer flexibility is more important than having as much enterprise compliance infrastructure/documentation around the platform itself. www.shopware.comossalt.com

If you tell me your expected order volume, cloud (AWS/Azure/GCP), B2B vs B2C, and required standards (PCI DSS, SOC 2, GDPR, HIPAA, etc.), I can narrow this to a concrete architecture and platform choice.

For strong security and compliance controls around payments and customer data, I would generally shortlist Magento Open Source (now part of the Adobe Commerce ecosystem) first, with WooCommerce as a lower-complexity alternative. The right choice depends heavily on your compliance requirements, team, and scale. www.velsof.comwww.digitalapplied.com

Recommended ranking for security/compliance-focused ecommerce

www.velsof.comwww.digitalapplied.com

My recommendation by scenario

Choose Magento Open Source if you need:

• PCI DSS program maturity
• Large transaction volumes
• Multiple stores/regions/currencies
• Complex customer permissions
• B2B workflows
• Strong audit trails and controlled deployments
• A dedicated security/DevOps team

Magento gives you more enterprise-grade control, but you must operate it correctly: secure hosting, vulnerability management, patching, logging, backups, penetration testing, and access controls. Self-hosted open source does not automatically make you compliant. www.velsof.comwww.digitalapplied.com

Choose WooCommerce if you need:

• Faster implementation
• Lower operational complexity
• A content-heavy storefront
• Standard payments through providers like Stripe/PayPal
• A smaller engineering team

WooCommerce can reduce PCI scope by avoiding storage of card data and using hosted payment flows, but the entire WordPress stack (core, plugins, themes, hosting) becomes part of your security responsibility. woocommerce.com

Controls I would require regardless of platform

For a payments + customer-data environment, implement:

Payment security

• Use tokenized/hosted payment pages where possible
• Never store raw card numbers
• Enforce PCI DSS controls
• Use a payment provider with strong compliance certifications

Application security

• Mandatory MFA for admins
• Role-based access control
• Secure secrets management
• Regular dependency scanning
• Patch SLAs for critical vulnerabilities
• Web application firewall and DDoS protection

Customer data protection

• Encryption in transit and at rest
• Data retention policies
• Audit logs
• Least-privilege database access
• Privacy controls for GDPR/CCPA-style requirements

Operations

• Security monitoring/SIEM integration
• Automated backups with restore testing
• Penetration tests before major launches
• Separate production/staging environments

Bottom line

For a company saying “security and compliance are primary requirements”, I would pick:

1. Magento Open Source → best overall open-source choice for enterprise-grade controls
2. WooCommerce with strict hardening → best if simplicity and speed matter more than enterprise complexity
3. PrestaShop/Medusa → consider for specific regional or architecture needs

If you tell me your expected annual revenue, order volume, number of SKUs, hosting model (cloud/on-prem), and compliance targets (PCI DSS, SOC 2, HIPAA, GDPR, etc.), I can narrow this to a more concrete recommendation.

If strong security/compliance for payments and customer data is the priority, I’d narrow the open-source field to Magento Open Source and Shopware, with WooCommerce as a third choice.

My recommendation: Magento Open Source

For a security-conscious, mid-market/enterprise ecommerce operation, I’d choose Magento Open Source—provided you have a capable engineering/security team.

Why:

• Mature security model: supports 2FA, CAPTCHA/reCAPTCHA, security scanning, admin security controls, and ongoing security patches. experienceleague.adobe.com
• Payment-data minimization: Adobe explicitly recommends not storing cardholder data in Commerce and supports payment approaches where sensitive payment information stays with the payment provider. experienceleague.adobe.com
• Enterprise architecture: strong RBAC/admin controls, extensibility, and separation between commerce functionality and payment processing.
• Migration path: if your compliance requirements eventually justify a managed enterprise platform, Adobe Commerce provides a natural upgrade path and has documented PCI/SOC 2/ISO 27001 controls for its cloud service. experienceleague.adobe.com

Important caveat: Magento Open Source itself doesn't magically make you PCI DSS compliant. Your hosting, network, plugins/extensions, deployment process, logging, patching, payment gateway, and organizational controls all matter.

How I'd rank the main options

Shopware deserves serious consideration. Its current platform emphasizes encryption, access controls, SOC 2, ISO 27001 and GDPR, with self-hosting available. www.shopware.com

I would not automatically choose WooCommerce for a high-compliance environment simply because it's popular. WooCommerce itself says the core plugin isn't PCI certified and that compliance extends to your hosting, plugins, WordPress installation, access controls, and operational processes. woocommerce.com

The architecture matters more than the platform

For your requirements, I'd design it roughly like this:

Ecommerce platform → hosted/tokenized payment gateway → no raw card data in your environment

Then enforce:

• MFA + least-privilege RBAC for administrators
• Centralized immutable audit logs
• Encryption in transit and at rest
• Secrets management rather than credentials in configuration/code
• Automated vulnerability/dependency scanning
• Rapid security-patch process
• WAF + DDoS protection
• Network segmentation
• Regular penetration testing
• PCI DSS scope minimization
• Customer-data retention/deletion policies
• Backup encryption and restore testing
• Formal incident-response procedures
• Strict review/allowlisting of third-party extensions

Bottom line: If you want open source + maximum control + serious security/compliance, I'd start with Magento Open Source. If your organization is particularly GDPR/European-oriented or wants Shopware's ecosystem, I'd put Shopware essentially neck-and-neck.

If you tell me your company size, expected order volume, cloud/on-prem preference, required compliance (PCI DSS, SOC 2, HIPAA, GDPR, etc.), and whether you have an internal engineering/security team, I can give you a much more definitive choice and architecture.

If security and compliance for payments + customer data are top-tier requirements, I’d shortlist Shopware and Saleor, with Shopware as the default choice for a traditional enterprise commerce program.

My recommendation: Shopware

Shopware is probably the strongest overall fit if you need enterprise commerce capabilities plus a serious security/compliance program. Shopware documents encryption in transit and at rest, access controls, rate limiting, and security measures, while its hosted environments have SOC 2 Type II and ISO 27001 positioning. www.shopware.com

Shopware official site

The important caveat: Shopware Open Source being secure does not make your deployment PCI DSS compliant automatically. Your infrastructure, payment integration, extensions, logging, IAM, vulnerability management, backups, incident response, and data-handling practices remain your responsibility.

When I'd choose Saleor instead

Saleor is particularly compelling if you have a strong engineering/DevOps team and want a headless, API-first architecture. Its GraphQL API and decoupled architecture make it easier to isolate the commerce engine from your customer-facing applications and minimize the amount of sensitive data moving through your systems. Saleor's managed offering explicitly provides SOC 2, PCI DSS, and GDPR coverage, while its core is open source. saleor.iowww.shopware.com

Saleor official site

What about Magento?

Adobe Commerce / Magento Open Source remains a credible option, particularly if you already have Magento expertise. Adobe documents security features for Magento Open Source and emphasizes using payment integrations where card data goes directly to the payment gateway rather than being stored in the commerce environment. experienceleague.adobe.com

The downside is operational complexity. A heavily customized Magento installation with numerous third-party extensions can create a much larger security and patch-management surface.

The architecture matters more than the platform

For a high-compliance deployment, I'd design it roughly like this:

Storefront → Commerce platform → Payment provider

with card numbers never entering your ecommerce application/database.

Use tokenization/hosted payment fields so your platform handles payment tokens rather than raw PAN/card data. Then layer on:

• SSO + phishing-resistant MFA for administrators
• Strict RBAC and least privilege
• Immutable/audited admin activity logs
• Encryption at rest and TLS everywhere
• Secrets in a dedicated secrets manager
• WAF + bot/DDoS protection
• Automated dependency/container vulnerability scanning
• Rapid security-patch SLAs
• Separate production/non-production environments
• Centralized SIEM logging and alerting
• Database backups with tested restoration
• Data retention/deletion policies
• Consent/privacy controls for customer data
• Regular penetration testing
• PCI DSS scope assessment with a QSA
• Formal incident-response and breach-notification procedures

Bottom line: If I were selecting today, I'd choose Shopware for an enterprise team wanting a broad, open-source commerce platform, or Saleor if your organization is engineering-heavy and wants a modern headless architecture. For the strongest compliance posture with the least operational burden, I'd strongly consider their managed/hosted offerings rather than self-hosting the open-source stack. saleor.iowww.shopware.com

If you tell me your expected annual GMV/order volume, cloud (AWS/Azure/GCP), B2B vs B2C, and required compliance (PCI DSS, SOC 2, GDPR/CCPA, HIPAA, etc.), I can narrow this to a specific architecture and platform.

If strong security and compliance for payments + customer data are the primary requirements, I’d shortlist Saleor first, WooCommerce second, and Medusa third.

My recommendation: Saleor

Saleor is the strongest fit if you have a capable engineering/DevOps team and are building a serious, API-first commerce system.

Why:

• Headless/API-first architecture — keeps your storefront, commerce engine, payment integrations, and other services more cleanly separated.
• Open source and self-hostable — you can control where customer data lives and how the environment is secured. saleor.iosaleor.io
• Strong enterprise orientation — Saleor specifically advertises SOC 2, GDPR and PCI-DSS compliance for its managed infrastructure. Be careful: that doesn't mean a self-hosted deployment automatically inherits those certifications. saleor.io
• Modern GraphQL architecture and extensive webhook/integration capabilities make it well suited to isolating payment and customer-data services. saleor.io
• It is actively developed; the current project reports substantial production scale. saleor.iosaleor.io

How I'd rank the options

WooCommerce has a major advantage in ecosystem maturity. Its documentation explicitly covers PCI DSS, security practices and hosted payment integrations. Using hosted payment fields means your server doesn't handle raw card numbers, substantially reducing PCI scope. woocommerce.com But the core WooCommerce plugin itself isn't PCI-certified, and your overall environment—including WordPress, plugins, hosting and access controls—still matters. woocommerce.comgithub.com

Medusa is attractive if your engineering team is heavily invested in TypeScript/Node.js. Its modular architecture is particularly good for custom payment integrations, but you're taking on more responsibility for securing and auditing the resulting application. github.com

One important distinction

Don't choose an ecommerce platform based on "PCI compliant" as a checkbox.

PCI compliance is a property of the whole payment environment, not simply the ecommerce software. For example, even WooCommerce says that using a PCI-compliant gateway doesn't automatically make the entire site compliant. woocommerce.comgithub.com

For a high-security deployment, I'd architect it roughly as:

Storefront → ecommerce platform → hosted/tokenized payment provider

with:

• No raw card data stored in your database
• Tokenized/hosted payment fields
• Encryption in transit and at rest
• MFA + SSO for administrators
• Strict RBAC/least privilege
• Centralized audit logging
• Secrets management rather than credentials in config/code
• WAF/API protection and rate limiting
• Automated dependency/security scanning
• Immutable backups + tested recovery
• Separate production/staging environments
• Regular penetration testing
• Formal vulnerability/patch management
• Data retention/deletion controls for customer PII
• A documented PCI DSS scope and responsibility matrix

Bottom line: If you're building a new platform where security, compliance, customer-data isolation and long-term architecture matter more than ease of setup, I'd choose Saleor. If you need the enormous WordPress/plugin ecosystem and want to minimize custom development, WooCommerce is the pragmatic alternative—but I'd use a very tightly controlled plugin set and hosted/tokenized payments.

If you tell me your expected transaction volume, cloud (AWS/Azure/GCP), jurisdictions (e.g. Canada/US/EU), and whether you need B2B, I can narrow this to a specific architecture and compliance approach.

If strong security/compliance for payments and customer data is the priority, I’d shortlist Saleor and Shopware, with Saleor as my default choice for a new, engineering-led build.

My recommendation: Saleor

Saleor is particularly attractive because its architecture keeps the commerce backend API-first and composable, rather than accumulating a large monolithic plugin surface. Its open-source core supports payments, checkout, customers, orders, multi-channel commerce, and extensibility. github.com

More importantly for your requirements, Saleor's managed offering explicitly advertises SOC 2, PCI DSS, and GDPR, with infrastructure controls such as autoscaling and a 99.99% uptime SLA. saleor.io

The important caveat: the open-source software itself does not make your deployment PCI compliant. Your hosting architecture, payment integration, logging, access controls, secrets management, vulnerability management, backups, and custom code all contribute to your compliance scope.

When I'd choose Shopware instead

Shopware is arguably the better choice if you want a more complete enterprise commerce product rather than an API-centric commerce engine. Shopware documents ISO 27001, SOC 2 Type II for hosted environments, GDPR compliance, encryption, authorization controls, and security measures such as rate limiting. www.shopware.com

It's especially compelling if you need substantial built-in B2B/merchant functionality and don't want to build as much of the commerce experience yourself.

The payment architecture matters more than the platform

For a security-sensitive deployment, I'd design it so that:

Your application → payment provider's hosted/tokenized checkout → payment network

rather than:

Your application → raw card number → your database

That can dramatically reduce the cardholder-data environment you have to secure. The ecommerce platform should store payment tokens/references, not raw PAN/CVV data.

I'd also require:

• MFA + strong RBAC for administrators
• Encryption in transit and at rest
• Centralized audit logging with tamper-resistant retention
• Secrets in a dedicated secrets manager, never source control
• Automated dependency/container vulnerability scanning
• SAST/DAST and penetration testing
• WAF, rate limiting and bot protection
• Immutable/isolated backups and tested recovery
• Strict production access controls and just-in-time access
• Data minimization and retention/deletion policies
• PCI DSS responsibility matrix and documented evidence
• GDPR/CCPA-style customer-data controls where applicable
• Separate environments and tightly controlled CI/CD deployments

Bottom line: If you're building a new, security-conscious platform with a strong engineering team, I'd choose Saleor + a PCI-compliant/tokenized payment provider + hardened cloud infrastructure. If you want more built-in enterprise commerce functionality and a more conventional platform, choose Shopware.

If you tell me your company size, expected order volume, cloud (AWS/Azure/GCP), payment processor, and compliance targets (PCI DSS, SOC 2, GDPR, HIPAA, etc.), I can narrow this down to a concrete architecture and compare Saleor vs. Shopware vs. Adobe Commerce for your environment.

If strong security, payment controls, and compliance are top-tier requirements, I’d shortlist Shopware and Magento Open Source, with Shopware as my default choice for a new enterprise-oriented implementation.

My recommendation

Why Shopware: its current platform materials explicitly cover encryption in transit/at rest, access controls, GDPR, ISO 27001, and SOC 2 for hosted environments, while supporting self-hosted deployment if you need infrastructure control. www.shopware.com

Magento Open Source is the other serious contender if you have a strong engineering/security team and need sophisticated catalog, pricing, B2B, multi-store, and integration capabilities. The tradeoff is considerably greater operational complexity. Recent comparisons continue to position Magento as the enterprise-scale open-source option. www.webscale.com

One important distinction

Don't select a platform because it is described as "PCI compliant." The platform alone cannot make your organization PCI DSS compliant. Your hosting, payment architecture, plugins/extensions, access controls, logging, vulnerability management, policies, and operational processes all matter.

For example, WooCommerce explicitly states that the core platform isn't PCI certified and that PCI responsibility ultimately remains with the store owner. Using a hosted/tokenized payment gateway can substantially reduce your PCI scope, but doesn't eliminate it. www.shopware.comwoocommerce.com

For a security-first architecture, I'd therefore design it roughly as:

Shopware → hosted/tokenized payment provider → no raw card data stored in your environment

plus:

• SSO + MFA for administrators
• strict RBAC/least privilege
• centralized audit logging/SIEM
• encryption at rest and TLS everywhere
• automated security patching and dependency scanning
• WAF/CDN and bot/card-testing protection
• isolated production/payment infrastructure
• secrets management rather than credentials in configuration
• regular penetration testing and vulnerability scanning
• formal retention/deletion controls for customer data
• documented PCI DSS, GDPR/CCPA and incident-response processes
• tightly controlled third-party extensions

If PCI DSS + SOC 2 + GDPR/CCPA + enterprise customer-data governance are all requirements, I'd favor Shopware over WooCommerce because you don't want your compliance architecture to depend on the security quality of a large WordPress/plugin stack. WooCommerce itself notes that plugins, hosting, access management and the broader environment become part of the security/compliance picture. woocommerce.com

Bottom line:
Choose Shopware for the best balance of open-source control, modern architecture, security/compliance capabilities, and enterprise commerce. Choose Magento Open Source instead if your requirements involve exceptionally complex B2B pricing, catalog, multi-site, or business rules and you have the engineering organization to operate it.

If you tell me your expected annual GMV, number of SKUs, countries, payment providers, cloud (AWS/Azure/GCP), and required compliance frameworks, I can narrow this to a specific architecture and compare Shopware vs Magento control-by-control.

If strong security and compliance for payments + customer data are your top requirements, I’d shortlist Saleor and Adobe Commerce Open Source, with Medusa as a third option.

My recommendation: Saleor

Saleor is probably the best fit if you're building a new, security-sensitive commerce stack and have a capable engineering/DevOps team.

Why:

• Headless/API-first architecture makes it easier to isolate the customer-facing application from the commerce backend. Saleor is GraphQL-native and designed around separate commerce channels. github.com
• Payments can be delegated to payment providers, avoiding the need for your application to handle raw card data. Saleor explicitly supports payment integrations/apps. github.com
• Strong fit for multi-region, multi-channel and complex catalogs. contracollective.com
• You retain control over infrastructure and source code, which can be valuable for stringent data-residency and security requirements.
• The architecture is more naturally suited to a dedicated security boundary than a traditional WordPress-based commerce installation.

When I'd choose Adobe Commerce instead

Adobe Adobe Commerce is worth serious consideration if compliance maturity and enterprise support outweigh the desire for a lightweight modern stack.

Adobe documents a formal shared-responsibility security model, including PCI compliance of its cloud platform and responsibility boundaries among Adobe, the merchant, cloud provider and CDN. experienceleague.adobe.com

That's attractive if you need:

• Mature enterprise security processes
• Extensive compliance/vendor documentation
• Large SI/integration ecosystem
• Complex B2B functionality
• A platform your auditors and procurement team already recognize

The trade-off is substantially more operational and architectural weight.

Where Medusa fits

Medusa is compelling if your engineering organization is heavily TypeScript/Node.js oriented. Its commerce modules are open source and designed to be customized/replaced, and Medusa now offers a managed cloud option. github.com

I'd choose it when developer flexibility and composability are more important than having the strongest enterprise-oriented compliance story out of the box.

Security/compliance ranking

One important caveat: the ecommerce platform itself does not make you PCI compliant. Your deployment architecture, payment integration, secrets management, access controls, logging, vulnerability management, backups, incident response, and organizational controls determine the actual compliance posture. Even self-hosted open-source commerce means you take on considerably more security responsibility. opensourceprojects.cc

For a high-security deployment, I'd architect it so that raw card data never reaches the ecommerce application at all: use a PCI-compliant payment processor/hosted payment components, tokenize payment information, encrypt customer data at rest and in transit, enforce strong IAM/MFA, isolate databases, maintain immutable audit logs, continuously scan dependencies, and keep the commerce/admin planes separated.

Bottom line:

• Greenfield + security-conscious engineering team → Saleor
• Large enterprise + rigorous compliance/procurement requirements → Adobe Commerce
• TypeScript-first team + maximum architectural customization → Medusa

If you tell me your required compliance targets (e.g. PCI DSS, SOC 2, GDPR, HIPAA, FedRAMP) and whether you're self-hosting or using managed cloud, I can narrow this to a specific architecture and deployment model.

If strong security and compliance for payments + customer data are the priority, I’d shortlist Saleor and Adobe Commerce/Magento Open Source, with Vendure as a strong option if you have a TypeScript-heavy engineering team.

My recommendation: Saleor

Saleor is probably the best fit if you want modern open-source architecture, strong isolation of payment data, and enterprise-scale commerce.

Why:

• Headless/API-first architecture gives you tighter control over what data reaches the storefront and internal services.
• Saleor supports complex, multi-channel commerce and is designed for large-scale deployments. saleor.iosaleor.io
• Its managed offering advertises SOC 2, PCI DSS and GDPR compliance, although those assurances apply to the managed service—not automatically to a self-hosted deployment. saleor.iosaleor.io
• You can architect payments so that card data never enters your application/database, substantially reducing PCI scope.

How I'd rank them

Adobe is particularly compelling if you need a mature enterprise platform and extensive compliance/security documentation. Adobe explicitly documents PCI requirements and recommends that cardholder data not be stored in Commerce; its payment services can keep PCI-regulated data out of your systems. experienceleague.adobe.com

For Vendure, the platform itself emphasizes enterprise security practices and provides detailed guidance, but its documentation makes clear that securing the application, infrastructure and network remains your responsibility. docs.vendure.io

The important caveat

No open-source ecommerce platform makes you PCI DSS compliant by itself. Your deployment, payment integration, cloud infrastructure, access controls, logging, vulnerability management, incident response, backups, and custom code all matter.

For a security-conscious architecture, I'd use:

Saleor → tokenized/hosted payment provider → PostgreSQL → private network → WAF/CDN → centralized audit logging/SIEM → KMS-managed encryption → strong IAM/MFA

The key design decision is to never store raw PAN/card numbers or CVV in the ecommerce application. Adobe's current guidance explicitly says storing cardholder data in Commerce is prohibited and can violate PCI obligations. experienceleague.adobe.comexperienceleague.adobe.com

Bottom line: If you're starting a new platform and have a capable engineering/security team, I'd choose Saleor. If you need the most mature traditional enterprise ecosystem and are comfortable with greater platform complexity, choose Adobe Commerce/Magento Open Source.

If you tell me your expected GMV/order volume, cloud (AWS/Azure/GCP), compliance targets (PCI DSS, SOC 2, GDPR/CCPA, HIPAA, etc.), and whether you're B2C or B2B, I can narrow this to a specific architecture and platform.

If strong security/compliance for payments and customer data is the priority, I’d shortlist Magento Open Source (Adobe Commerce ecosystem) and Shopware, with WooCommerce as a third option.

My recommendation: Magento Open Source

For a serious, security-conscious ecommerce operation, I’d choose Adobe Magento Open Source if you have a capable engineering/DevSecOps team.

Why:

• Mature enterprise security model: 2FA, security scanning, CAPTCHA, CSP, admin/session controls, and extensive security guidance are built into the platform. experienceleague.adobe.com
• Payment-data minimization: Adobe explicitly recommends not storing cardholder data in Commerce. Using a hosted/tokenized payment provider can substantially reduce your PCI scope. experienceleague.adobe.com
• Strong compliance tooling/documentation: Adobe documents PCI DSS requirements and the merchant's responsibilities rather than implying that the platform itself makes you compliant. experienceleague.adobe.comexperienceleague.adobe.comwww.shopware.comwoocommerce.com
• Good fit for complex access controls and enterprise integrations.
• You retain control over the application and customer data with the open-source/self-hosted deployment.

How I'd rank the options

Shopware is particularly compelling if GDPR/privacy and European operations are important. Its hosted environments advertise SOC 2 Type II and ISO 27001 controls, encryption, and access controls, while supporting self-hosted deployments as well. www.shopware.com

I'd put WooCommerce behind those two for a high-security environment. WooCommerce itself makes clear that PCI compliance remains the store owner's responsibility and that plugins, WordPress, hosting, access controls, and maintenance all become part of the security picture. woocommerce.com

One important caveat

No open-source ecommerce platform makes you PCI DSS compliant by itself. Your architecture matters at least as much as the platform.

For a security-first deployment, I'd use:

Magento/Shopware → hosted/tokenized payment provider → no raw card data in your environment → encrypted customer database → MFA/RBAC → WAF/CDN → centralized immutable logging → vulnerability scanning/SAST/DAST → automated patching → secrets management → backups + tested recovery.

If you're choosing specifically between Magento Open Source vs. Shopware, tell me your approximate annual order volume, cloud/on-prem preference, and whether you need B2B/multi-store, and I can give you a security/compliance-focused architecture recommendation.

If strong security and compliance controls for payments + customer data are the priority, I’d shortlist Shopware and Magento Open Source, with Shopware as my default choice for a new enterprise deployment.

My recommendation: Shopware

Shopware is particularly attractive because its current security program includes ISO/IEC 27001:2022, SOC 2-related controls, encryption at rest/in transit, access controls, and privacy/data-management capabilities. It also supports self-hosting, giving you substantial control over where customer data resides. www.shopware.com

For payments, I'd architect it so your ecommerce application never stores raw card numbers. Use a PCI-compliant payment processor with hosted fields/tokenization. That substantially reduces your PCI DSS scope. WooCommerce's own documentation makes the same distinction: using a hosted payment gateway can significantly reduce scope, but the ecommerce environment still has PCI responsibilities. woocommerce.com

When I'd choose Magento Open Source instead

Magento Open Source makes more sense if you need very complex pricing, catalogs, multiple stores, B2B workflows, or extensive customization and have a strong security/DevOps team. Its flexibility comes with considerably more infrastructure and patch-management responsibility. www.velsof.com

Security architecture matters more than the platform

Whichever you choose, I'd require:

• Tokenized/hosted payment processing — no PAN/CVV stored in your database.
• Strong IAM — SSO, MFA, least privilege, separate production/admin accounts.
• Encryption — TLS in transit and strong encryption at rest.
• Immutable audit logs for administrator, customer-data, payment and configuration activity.
• Secrets management rather than credentials in source code/config files.
• WAF + DDoS protection and network segmentation.
• Automated vulnerability/dependency scanning and a defined patch SLA.
• Encrypted, tested backups with documented disaster recovery.
• Strict plugin/extension governance — probably the biggest risk in an open-source ecosystem.
• Data minimization and retention controls for customer PII.
• PCI DSS v4.0.1 controls, plus GDPR/CCPA or other privacy requirements applicable to your customers.
• Regular penetration testing and incident-response exercises.

One important point: no open-source ecommerce platform makes you PCI-compliant simply by installing it. Your hosting, payment flow, extensions, identity management, logging, policies and operational practices all contribute to the compliance boundary. woocommerce.com

Bottom line: If you have a competent engineering/security team and want open source with strong enterprise security characteristics, I'd start with Shopware. Choose Magento Open Source if your commerce requirements are unusually complex and justify its operational overhead.

If strong security and compliance for payments + customer data are the priorities, I’d shortlist Saleor and Vendure, with Saleor as my default choice for a security-conscious enterprise build.

My ranking

Why I'd pick Saleor

Saleor has a particularly strong fit for your requirements. Its managed offering explicitly advertises SOC 2, PCI DSS and GDPR compliance, while retaining an open-source/self-hosting option. It is also designed around a decoupled architecture, which makes it easier to isolate your storefront, commerce APIs, payment integrations, and customer-data systems. saleor.io

For payments, I'd strongly recommend never letting your ecommerce application directly handle raw card numbers unless you have a compelling reason. Use a PCI-compliant payment provider with hosted/tokenized payment fields, so your platform primarily handles payment tokens rather than cardholder data. That can substantially reduce your PCI DSS scope.

When I'd choose Vendure instead

Vendure is arguably the better choice if you're B2B-heavy or need sophisticated authorization and governance. Its current enterprise offering emphasizes SSO, audit logging, row-level access control and data-residency controls. Its security documentation also covers RBAC, API hardening and protections against abusive GraphQL queries. vendure.io

That's compelling if your compliance requirements include things like:

• Fine-grained employee/admin permissions
• Strong audit trails
• SSO/MFA integration
• Segregation of duties
• B2B customer organizations and approval workflows
• Data residency requirements

The important caveat

Choosing an open-source platform does not make the resulting system PCI/SOC 2/GDPR compliant. Your architecture and operational controls determine that.

For a serious deployment, I'd want this baseline:

Payments

• Tokenized/hosted payment collection
• No raw PAN/CVV stored in your database
• PCI-compliant payment processor
• Webhook signature verification
• Idempotent payment/order operations
• Strong fraud controls

Customer data

• Encryption in transit and at rest
• Separate production/customer-data environments
• Secrets manager rather than credentials in code
• Strict RBAC/least privilege
• Immutable audit logging
• Data-retention/deletion workflows
• Backup encryption and tested restoration
• Database/network segmentation

Application/security

• SAST/DAST and dependency scanning
• Automated vulnerability monitoring
• Signed/verified releases where possible
• WAF/rate limiting
• API authentication and authorization
• Regular penetration testing
• Incident-response and patching procedures
• SBOM/software supply-chain controls

Compliance

• PCI DSS
• SOC 2 controls if applicable
• GDPR/CCPA depending on customer geography
• Documented data-processing/retention policies
• Vendor/subprocessor assessment

Bottom line

I'd choose Saleor if you're primarily B2C/global and want the strongest combination of scale, composability and a credible compliance-oriented deployment path.

I'd choose Vendure if your organization is B2B-heavy and security governance, authorization, auditability and complex business workflows are the dominant requirements.

I would not choose WooCommerce simply because it's the most mature/open-source option for this particular requirement; its enormous WordPress/plugin ecosystem means your security boundary can become considerably harder to control.

If you tell me your expected order volume, B2B vs. B2C, cloud (AWS/Azure/GCP), required compliance standards (PCI/SOC 2/HIPAA/GDPR), and whether you need self-hosting, I can narrow this down to a concrete architecture and platform choice.