# Official sources

Use this reference only when you need source grounding for Apigee X service behavior or the detailed source list.

## Google Cloud documentation

Use these as starting points, not as proof of the user's live GCP state:
- https://cloud.google.com/apigee/docs/api-platform/get-started/what-apigee
- https://cloud.google.com/apigee/docs/api-platform/security/oauth/oauth-home
- https://cloud.google.com/apigee/docs/api-platform/reference/policies/spike-arrest-policy
- https://cloud.google.com/apigee/docs/api-platform/reference/policies/quota-policy
- https://cloud.google.com/apigee/docs/api-platform/reference/policies/verify-api-key-policy
- https://cloud.google.com/apigee/docs/api-platform/reference/policies/jwt-policies-overview
- https://cloud.google.com/apigee/docs/api-platform/fundamentals/what-are-apis
- https://cloud.google.com/apigee/docs/api-platform/deploy/deploying-proxies-ui

## Grounding rule

Official documentation explains Apigee X service behavior. It does not prove the user's current proxy configuration, policy state, environment mapping, or operational posture. Prefer live Apigee Management API evidence or sanitized user-provided evidence for current-state claims.
