AWS Architecture

AWS Architecture

1. User: User types a domain like google.com in the browser and hits enter.

2. Route 53 (DNS): Request first goes to Route 53, which is AWS DNS service.

• It resolves google.com to an IP like 142.251.223.238
• It routes the user to the correct server.

3. CloudFront (CDN): Then it goes to CloudFront, the CDN.

• It serves all static files. (Images, CSS, JS)
• Files are cached at edge locations close to the user, so the site loads very fast.

4. API Gateway: From CloudFront, the request goes to API Gateway. This is the main entry point for your backend.

• Routing: Decides which service the request should go to.
• Auth: Checks if the user is authenticated
• Rate Limit & Throttling: Protects your backend from too many requests

5. Backend: API Gateway forwards the request to the Backend. It has 3 main options:

• EC2: A virtual server where you manage RAM, Storage, and Server yourself.
• ECS: Used to Manage & Run Docker containers.
• Lambda: Serverless. No server to manage, you just run code and pay per use.

6. Async Request (SQS): If a task doesn’t need an immediate response (like…