concept Amazon API Gateway in category aws
This is an excerpt from Manning's book AWS Lambda in Action: Event-driven serverless applications.
For example, let’s implement the web API for a bookstore. Users may need to list books, get more information for a specific book, and add, update, or delete a book. Using the Amazon API Gateway, you can map the access to a specific resource (the URL of the bookstore or a specific book) with an HTTP verb (GET, POST, PUT, DELETE, and so on) to the invocation of an AWS Lambda function. See table 1.1 for a sample configuration.
In this chapter you’ll make your function available over HTTP as a web API using the Amazon API Gateway. You’ll learn how to integrate a Lambda function with the API Gateway and test that using the web console, a browser, or a command-line tool. You’ll also build a new Lambda function to see how the API Gateway context can be used by a function to have more information about who’s calling the web API.
One of the advantages of AWS Lambda is the integration with the Amazon API Gateway to access AWS Lambda functions without using the AWS APIs, CLI, or SDKs: you can use functions via a web API that you design.
