API Gateway

API Gateway acts as the central control point for managing, securing, and scaling API traffic.

API Gateway is a fully managed service that simplifies the creation, publication, maintenance, monitoring, and security of APIs at any scale. It handles critical tasks: traffic management, access control (e.g., AWS IAM, Cognito), throttling, and analytics. For example, a mobile application accessing backend services might route all requests through API Gateway, which then enforces security policies, caches responses to reduce load, and logs all interactions for monitoring and auditing. This offloads significant operational overhead from developers, allowing them to focus on core application logic rather than API infrastructure.

https://aws.amazon.com/api-gateway/