AWS API Gateway Integrations for Serverless Applications

Building modern backend systems requires reliable, secure, and cost-effective communication between your frontend and your cloud services. AWS API Gateway is the entry point for serverless architectures, but knowing how to connect it efficiently to your backend services is key to reducing latency and cost. This text-based course guides you from foundational API concepts to deploying robust, secure, and optimized service integrations. You will understand how to bypass unnecessary computation by connecting API Gateway directly to services like DynamoDB and SQS, configure secure access control, and handle cross-origin requests. What you'll learn: - Understand core API Gateway concepts, including HTTP vs REST APIs, resources, and methods. - Configure direct AWS service integrations to bypass Lambda and reduce execution costs. - Map incoming requests and outgoing responses using Velocity Template Language (VTL). - Implement secure authentication and authorization using IAM policies and Cognito. - Set up Cross-Origin Resource Sharing (CORS) to safely connect your API with web frontends. - Apply modern observability practices by setting up structured logging and tracing for API endpoints. You will start with the fundamental terminology of serverless APIs before moving step-by-step through request-response mapping, direct service integrations, and security configurations. Through written explanations and practical configuration examples, you will learn how to design production-ready serverless architectures. This course is designed for beginner backend developers, cloud enthusiasts, and software engineers new to AWS serverless architectures. No prior AWS or API Gateway experience is required, though a basic understanding of web requests (HTTP) is helpful. Start reading today to master serverless API integrations and build highly efficient cloud backends.