AWS API Gateway

Imagine we're running a shopping mall with various stores (services). Each store has a specific way of handling customer requests, such as ordering products or checking inventory. Instead of letting customers interact with each store directly, which could be confusing and inefficient, we create a central information desk (API Gateway) that handles all incoming requests and forwards them to the right store.

AWS API Gateway is like that central information desk. It acts as a front door for our API and allows us to define how incoming requests should be handled, authenticated, and routed to different back-end services, such as AWS Lambda functions or Step Functions. This way, we can create a standardized, secure, and scalable way for our users to interact with our services.

Now, let's discuss how API Gateway connects to Lambda functions and Step Functions and the differences between HTTP APIs and REST APIs.

Connecting API Gateway to Lambda functions

When a customer at the information desk asks for a product, the desk attendant forwards the request to the corresponding store. Similarly, API Gateway routes incoming API requests to Lambda ...