Authentication Gateway.
Build authentication layers that protect custom endpoints while integrating with identity systems.
Custom APIs require authentication to identify callers and authorization to determine access. Integrate with existing identity providers rather than building custom auth.
OAuth2 provides the standard framework: authorization code flow for user-facing apps, client credentials for service-to-service, and JWT tokens for stateless validation.
Implement defense in depth: API keys for identification, OAuth tokens for authorization, mTLS for transport security, and IP allowlisting for additional restriction.
API KEY
Identification
Identifies the client application. Required for all requests. Enables rate limiting per client.
OAUTH
Authorization
Validates user/service permissions. Scopes define allowed operations.
mTLS
Transport
Mutual TLS for service-to-service. Cryptographic client verification.