Building a Serverless Three-Tier Architecture on AWS with AWS CDK

Launch a production-style, fully serverless three-tier web application on AWS — built and deployed entirely with AWS CDK (TypeScript).

This tutorial walks you through building a frontend, backend, authentication and database layer, each isolated in its own CDK stack for clean architecture, flexibility, and reusability. You’ll deploy the entire project with a single command and learn how each AWS component integrates together.

What You’ll Build

A complete three-tier architecture, fully serverless and event-driven:

• FrontendStack — S3 + CloudFront for hosting a static web app
• BackendStack — API Gateway + AWS Lambda (Node.js) for business logic
• DatabaseStack — DynamoDB for storing application data
• AuthStack — Amazon Cognito for authentication and authorization

All stacks are written in TypeScript using AWS CDK, giving you infrastructure-as-code that’s modular and easy to maintain.

What You’ll Learn

• Initialize, bootstrap, and deploy AWS CDK projects
• Connect independent stacks together (frontend <--> backend <--> database)
• Write and deploy Lambda functions with the NodejsFunction construct
• Use DynamoDB with CRUD operations through AWS SDK v3
• Implement Amazon Cognito for secure user authentication
• Run automated Jest tests against API Gateway endpoints
• Understand and apply CDK Removal Policies (DESTROY, RETAIN, SNAPSHOT)
• Use CloudWatch for log inspection and troubleshooting

What’s Included

• Complete AWS CDK project source code (TypeScript)
• Step-by-step PDF guide
• Jest test examples for your API
• Code walkthrough with detailed explanations
• Ready-to-deploy CDK stacks
• Cloud architecture diagrams

Who This Is For

This project is ideal for:

• Cloud engineers and developers learning AWS CDK
• DevOps engineers designing modular IaC solutions
• Students and AWS learners exploring real serverless patterns
• Freelancers and consultants building production-ready cloud projects

You’ll Walk Away Knowing How To:

• Design scalable, maintainable multi-tier apps on AWS
• Separate concerns using independent CDK stacks
• Secure APIs with Cognito
• Automate testing and CI/CD for serverless systems

Deliverables

After purchase, you’ll receive:

• ✅ ZIP archive with full CDK source code
• ✅ PDF tutorial with explanations, architecture diagrams, and deployment steps
• ✅ Example Jest test suites for API validation

Build Once. Deploy Anywhere.

This is more than a demo — it’s a reusable CDK blueprint for your future projects.
Clone it, customize it, and use it to build real-world, serverless AWS applications.