Microsoft Graph

1. Microsoft Graph Overview

   Unified endpoint, resources, and data access across Microsoft 365.

2. Use the Graph API

   Requests, versions, resource addressing, and responses.

3. Authentication and Authorization

   Microsoft Entra app registration, delegated vs application access, and tokens.

4. Permissions Overview

   Delegated and application permissions, consent, and least privilege.

5. Query Parameters

   OData $select, $filter, $expand, $search, and $orderby.

6. Paging

   Server-driven paging with nextLink.

7. JSON Batching

   Combining requests into batches.

8. Change Notifications (Webhooks)

   Subscriptions, lifecycle notifications, and validation.

9. Delta Query

   Tracking incremental changes to resources.

10. Throttling

    Throttling limits and handling 429 responses.

11. Error Responses

    Error format and common error codes.

12. SDKs

    Graph SDKs and request builders.

13. Best Practices

    Performance and reliability recommendations.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.