AWS Serverless API with Cognito Auth

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About This Architecture

Serverless API architecture on AWS combines Amazon Cognito user authentication with API Gateway and Lambda for scalable, pay-per-request compute. Users authenticate through Cognito via a custom domain managed in GoDaddy DNS, which routes API requests to API Gateway. API Gateway validates Cognito JWT tokens and invokes Lambda functions that query RDS PostgreSQL for persistent data storage. This pattern eliminates server management while providing enterprise-grade authentication, automatic scaling, and cost efficiency for modern web and mobile applications. Fork this diagram on Diagrams.so to customize authentication flows, add DynamoDB caching layers, or integrate additional AWS services like SQS for asynchronous processing.

People also ask

How do I build a serverless API on AWS with Cognito authentication and RDS database?

Build a serverless API by configuring Amazon Cognito user pools for authentication, API Gateway with Cognito authorizers to validate JWT tokens, Lambda functions for business logic, and RDS PostgreSQL for relational data. Route custom domains through DNS providers like GoDaddy to API Gateway endpoints.

AWS Serverless API with Cognito Auth

AWSintermediateServerlessAPI GatewayLambdaCognitoRDS
Domain: ServerlessAudience: AWS solutions architects building serverless APIs with managed authentication
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Created by

February 19, 2026

Updated

February 19, 2026 at 12:53 PM

Type

architecture

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