Microsoft Graph
The API and data layer that exposes a user's Microsoft 365 content and relationships, providing personalized grounding context to Copilot.
Microsoft Graph is the unified API and data fabric of Microsoft 365, exposing a user’s mail, calendar, Teams chats, OneDrive and SharePoint files, contacts, and the relationships between them through a single endpoint. Copilot relies on Graph to ground its responses in real, personalized work context. Crucially, Graph enforces existing Microsoft 365 permissions rather than bypassing them, so Copilot can only surface content the signed-in user can already access. That means oversharing in SharePoint directly widens what Copilot can retrieve and present.
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