Cost-Effective Backend

This project is a classic example of a **Serverless Backend**. All API endpoints are handled by small, isolated **AWS Lambda** functions (written in Go) and exposed via **API Gateway**.

Authentication Flow

User registration and sign-in are managed entirely by **AWS Cognito**. API Gateway is configured with a Cognito authorizer, ensuring only valid, authenticated requests reach the Lambda functions, significantly reducing security complexity and cost.

This setup automatically scales to handle millions of requests without requiring any server management.