Managing Access to Backend Services with API Gateway

API Gateway is the critical intermediary between the client applications and the backend AWS services. The front-line interface handles incoming HTTP requests from web applications, mobile clients, or other external services. The responsibilities and capabilities of API Gateway in this context are multi-faceted and essential for the overall performance and security of the application. Managing access to backend services with API Gateway involves several layered components that provide a robust interface between a user’s requests and an application’s backend services.

The following diagram illustrates a simple serverless architecture pattern using AWS services, depicting the data flow between API Gateway, AWS Lambda, and DynamoDB:

Figure 8.8 – Serverless architecture design

Here’s a breakdown of the roles and responsibilities of each component in this architecture:

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