Serverless Web APIs with Express and AWS Lambda

Deploying web applications to the cloud shouldn't mean rewriting your entire routing logic. By combining the familiar Express framework with AWS Lambda, you can build scalable, cost-effective APIs while retaining complete control over your application's routing. This text-based course guides you through the process of adapting Express applications for serverless environments. You will transition from traditional server hosting to deploying lightweight, event-driven APIs on AWS Lambda, using API Gateway as your entry point. What you'll learn: Understand the core concepts of serverless architecture, AWS Lambda, and API Gateway; Configure Express routing to handle HTTP requests seamlessly inside a single Lambda function; Implement modern JavaScript patterns, including async/await and ES Modules, for clean serverless code; Apply middleware for authentication, error handling, and request validation in a serverless context; Practice configuring serverless Express apps using modern Infrastructure as Code concepts; Optimize cold starts and manage application state efficiently in transient environments. You will start by exploring foundational serverless concepts before walking through step-by-step written explanations of how to bridge the Express API with AWS Lambda handlers. This course is designed for web developers familiar with basic JavaScript and Express who want to transition to serverless deployment, with no prior cloud experience required. Start reading today to master serverless Express APIs and scale your web applications effortlessly.