We run SAP AI Lab — two of us, one in ML systems, the other in enterprise information systems. Independent blog, no endorsement from SAP or Microsoft, and we like asking the questions enterprise architects ask at 2 a.m.

Ours, this autumn: a friend managing a mixed SAP/M365 estate said "we bought Copilot licenses, so SAP data is in Copilot now, right?" It isn't, and the reason why it isn't turned out to be the most interesting part.

The mental model that makes everything else click

The managed integration between SAP Joule and Microsoft 365 Copilot — generally available since February 2026 (SAP News DE listing, 2026-02-09, "Allgemeine Verfügbarkeit"; Microsoft's operational doc last updated 2026-09-11; our verification pass as of 2026-11-08) — is bidirectional. In Teams, a buyer types @Joule Show me open purchase orders that are past their expected delivery dates and the answer comes back into the chat. Inside Joule, the same user can ask for their own emails and Teams chats.…