What are API gateway patterns in the Salesforce ecosystem?
Suggested answer
An API Gateway sits between external consumers and backend APIs, providing a single entry point with centralised capabilities:
Patterns in Salesforce context:
- Salesforce as the gateway: Salesforce Experience Cloud APIs (Community endpoints) or Salesforce API Management (limited). External systems call Salesforce as their primary integration point.
- MuleSoft API Gateway: MuleSoft Anypoint Platform acts as a full gateway — routing, rate limiting, authentication (OAuth policy), IP whitelisting, caching, and analytics. Salesforce is one of the downstream systems.
- AWS API Gateway / Azure APIM: Cloud-native gateways that front Salesforce APIs. Used when Salesforce is part of a broader cloud architecture.
Key gateway capabilities: Rate limiting (throttle per consumer), authentication enforcement (JWT/API key validation before reaching Salesforce), request/response transformation, caching to reduce Salesforce API calls, logging and analytics, canary routing for API version migrations.
Practice content for interview preparation; not an official vendor answer. Verify details against current product documentation.
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