Glossary
Microsoft Graph
The unified REST API for accessing Microsoft 365 data and capabilities.
Microsoft Graph is the unified REST API for accessing Microsoft 365 data and capabilities. A single endpoint — graph.microsoft.com — exposes users, groups, mail, calendars, files, Teams chats and channels, planner tasks, Intune-managed devices, security alerts, and much more, all behind a single Entra ID authentication model. SDKs are available for .NET, JavaScript, Python, Java, Go, and PowerShell, plus Graph Explorer for interactive testing. Graph is what Microsoft 365 Copilot uses to ground responses in a user's tenant content. For any custom integration — provisioning users, building bots, exporting data, automating tasks — Microsoft Graph is the right starting point.