Hybrid AC + Plus — anyone actually doing this?

Yes — usually a few dozen brands at any time, almost all $100M+. The pattern works but operationally it’s not for the faint-hearted.

The pattern (real, not aspirational):

• Shopify Plus powers the D2C consumer brand — fast campaigns, Launchpad, Plus apps for marketing tools, mobile-first checkout
• Adobe Commerce powers the B2B / wholesale operation — companies, negotiable quotes, requisition lists, multi-buyer roles, custom approval chains, ERP-driven pricing
• Shared backbone: ERP (NetSuite / SAP / Microsoft Dynamics) is the system of record for inventory + customers + orders. PIM (Akeneo / Pimcore) feeds product data to both platforms. Identity service (Okta / Auth0 / custom) for unified login if needed.
• Customer experience: usually visibly two stores. Some brands keep them on subdomains (shop.brand.com for D2C, b2b.brand.com for wholesale); others on entirely separate domains. SSO between them is rare — buyers usually treat them as separate channels.

What goes wrong:

• Two ops teams, two release cycles, two sets of integrations to maintain — operationally heavy
• Promotions / pricing / inventory consistency between the two platforms requires real engineering (PIM is necessary, not nice-to-have)
• Customer service teams need training on both UIs
• Reporting consolidation requires a separate BI layer (Looker / Tableau / Mode) — neither platform’s native reporting handles cross-platform views
• Total cost is roughly platform-A + platform-B + 30% integration overhead

When it’s justified: $100M+ GMV with a hard split between B2C (consumer brand requiring marketing velocity) and B2B (procurement-style with deep workflow needs). Below $100M, picking one platform and paying for engineering on the gaps usually beats hybrid TCO.

Examples: several large beauty / apparel / supplement brands run this pattern; rare in industrial / distribution where AC alone serves both motions adequately.