| Retrieval substrate | Bing + Microsoft Graph/M365 + connectors | Separate public web and enterprise knowledge |
| Citation UI | Citation pills, inline citations, side-pane sources | Source UI varies by product surface |
| Query/context | Utterance + selected document/email/thread context | Permissions and Graph context change answers |
| Enterprise personalization | Tenant adoption, permissions, Graph quality | Organization-level setup matters |
| Measurement note | Separate Bing-visible sources from internal sources | External SEO and internal knowledge hygiene are different problems |