AWS Cognito to ELB Authentication Flow

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About This Architecture

Multi-AZ web application architecture integrates AWS Cognito User Pool with Application Load Balancer for centralized authentication across us-east-1a and us-east-1b availability zones. Users authenticate through Cognito before ALB routes traffic to EC2 t3.medium instances in private subnets (10.0.2.0/24, 10.0.4.0/24) within VPC 10.0.0.0/16. This pattern offloads identity management to a managed service, eliminating custom authentication code while ensuring high availability through dual-AZ deployment. Fork this diagram on Diagrams.so to customize subnet ranges, add RDS backend tiers, or integrate with API Gateway for serverless components. Ideal for teams migrating from session-based auth to OAuth 2.0 flows with JWT token validation at the load balancer layer.

People also ask

How do I integrate AWS Cognito User Pool authentication with Application Load Balancer for a multi-AZ web application?

Configure ALB authentication rules to validate Cognito User Pool JWT tokens before routing to EC2 instances in private subnets across multiple availability zones. This diagram shows the complete flow from user authentication through Cognito to ALB distribution across us-east-1a and us-east-1b.

AWS Cognito to ELB Authentication Flow

AWSintermediateCognitoApplication Load BalancerMulti-AZVPCAuthentication
Domain: Cloud AwsAudience: AWS solutions architects designing secure web application authentication
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Created by

February 26, 2026

Updated

February 26, 2026 at 5:58 PM

Type

architecture

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