20 Serverless Project

title: Building a Complete Serverless API — Project weight: 30 date: 2026-06-28 lastmod: 2026-06-28 description: Build a complete production-ready serverless API with AWS Lambda, API Gateway, DynamoDB, S3, Cognito auth, Serverless Framework, CI/CD, and monitoring. tags: [api-development, serverless]

This capstone serverless project builds a production-ready image gallery API using AWS Lambda, API Gateway, DynamoDB, S3, Cognito authentication, Serverless Framework, CloudWatch monitoring, and GitHub Actions CI/CD.

serverless-gallery/ ├── handlers/ │ ├── auth.py # Cognito JWT verification │ ├── images.py # Image CRUD + metadata │ ├── upload.py # Presigned URL generation │ ├── resize.py # S3-triggered image resize │ └── search.py # DynamoDB query + filtering ├── layers/ # Shared dependencies ├── tests/ ├── serverless.yml ├── .github/workflows/deploy.yml ├── requirements.txt └── package.json

Features: Cognito user pool for auth, API Gateway HTTP API with Lambda authorizers, DynamoDB single-table for image metadata, S3 for original and thumbnail storage, Lambda layers for shared code, serverless-offline for local dev, CloudWatch dashboards for monitoring, and GitHub Actions for CI/CD with stage promotion.

## What's Next

Now learn about hypermedia APIs and HATEOAS in Hypermedia APIs and HATEOAS.