Build a Serverless API on AWS: Lambda + API Gateway + DynamoDB (Step-by-Step)

Make your website dynamic — build a real, working contact form backed by a serverless API on AWS, end to end. We go from a static site to full-stack: a DynamoDB database, a Lambda function, a least-privilege IAM role, an API Gateway HTTPS endpoint, and we tackle the #1 beginner trap — CORS. Every step is shown on BOTH the real AWS console and the command line, then wired into the live form on viaanlabs.com and shipped with GitHub Actions CI/CD.

What you'll learn:
- DynamoDB — a fast, serverless database (pay-per-request, no servers)
- AWS Lambda — a function that runs only when called
- IAM least-privilege — one action, one table
- API Gateway — a public HTTPS endpoint for your function
- CORS — why the browser blocks it and the one setting that fixes it
- Wire the form + deploy with CI/CD

Chapters:
0:00 What we're building (live demo)
1:09 The plan
1:42 DynamoDB — a serverless database
2:57 Lambda + least-privilege IAM
5:02 API Gateway — a public endpoint
6:14 CORS — the #1 gotcha (explained)
7:08 Test the whole backend
8:11 Wire the form + deploy
8:45 The live reveal
9:23 Recap & cloud-career skills

Built live on viaanlabs.com.
#AWS #Serverless #Lambda #APIGateway #DynamoDB #CloudComputing #AWSTutorial #DevOps

Видео Build a Serverless API on AWS: Lambda + API Gateway + DynamoDB (Step-by-Step) канала Viaan Cloud