What’s actually IN Adobe Commerce that’s NOT in Open Source?

The codebases are 99% identical. The actual AC-only modules are a finite, well-known list:

• Magento_Company — multi-buyer B2B accounts with hierarchy, role permissions, shared catalogs, and company-specific pricing.
• Magento_NegotiableQuote — RFQ workflow with multi-round price negotiation between buyer and merchant.
• Magento_RequisitionList — recurring SKU lists for repeat B2B orders.
• Magento_PageBuilder — the drag-drop visual CMS editor.
• Magento_Staging — schedule price / content / promo changes to a future date with preview-mode.
• Magento_GiftCard, Magento_Reward, Magento_Rma — gift cards, loyalty points, return-merch authorisation.
• Magento_CustomerSegment — rules-based audience builder for promos and content.
• Adobe Commerce Cloud — managed Pro/Enterprise infrastructure (not a module, but bundled).

That’s the actual delta. Everything else — PWA Studio, GraphQL, Hyvä compat, REST — is identical between editions.