Building a Serverless REST API with AWS Lambda and API Gateway

Serverless architecture is gaining immense popularity due to its scalability and cost-effectiveness. In this post, I’ll guide readers through the process of creating a REST API using AWS Lambda and API Gateway. This approach eliminates the need to manage servers, letting you focus entirely on your application logic.

What You’ll Learn:
How AWS Lambda works and why it’s ideal for serverless applications.
The role of API Gateway in exposing Lambda functions as REST endpoints.

How to test the deployed API.
Step-by-Step Breakdown:

1. Creating a Lambda Function:
   Walk readers through setting up a simple AWS Lambda function using the AWS Management Console.
   Include a code snippet for a basic function (e.g., a “Hello World” function in Python or Node.js).

2. Configuring API Gateway:
   Explain how to create an API Gateway endpoint and connect it to the Lambda function.
   Highlight important configurations like HTTP methods and resource paths.

3. Testing the API:
   Provide steps to test the API using tools like Postman or cURL.
   Show how logs from AWS CloudWatch can help in debugging.

4. Conclusion:
   Summarize the benefits of serverless APIs and encourage readers to extend the example into a real-world application.