Build a Serverless REST API with AWS Lambda & API Gateway | Node.js Tutorial 2025
Learn how to build a *scalable, cost-efficient REST API* using **AWS Lambda**, **API Gateway**, and **Node.js**. This tutorial will walk you through:
Intro — Why go serverless?
Configure API Gateway (REST endpoints)
Write Lambda functions in Node.js
Connect Lambda to API Gateway
Handling JSON
Testing with Postman
Deployment on AWS
What you’ll need:
• AWS account
• Node.js & npm installed
• Familiarity with JavaScript & basic HTTP methods
Why you'll love this approach:
• *No server maintenance*
• *Auto-scaling*
• Pay only for what you use
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