Integrating AWS Lambda with other AWS services
Integrating AWS Lambda with other AWS services is a very important pattern for building scalable, serverless applications. In this section, we’ll explore how to connect Lambda functions with services such as API Gateway, Amazon SNS, Amazon DynamoDB, and Amazon SQS.
Integrating Lambda with API Gateway
API Gateway acts as a front door for Lambda functions, allowing us to expose them as RESTful APIs. For a URL shortener, we might have an endpoint that accepts a long URL and returns a shortened version. When a client sends a POST request to this endpoint, API Gateway invokes the corresponding Lambda function. The function processes the request, generates a short URL, and returns the response. This setup enables us to build a serverless API without managing any infrastructure.
The Lambda function code itself doesn’t change when we add API Gateway in front of it. API Gateway simply acts as a proxy that receives HTTP...
