Secure JWT authentication architecture on AWS integrates API Gateway, Cognito, and a custom Auth Service to validate tokens and manage access across microservices. Users authenticate via Browser or Mobile Client, receiving JWT access and refresh tokens from the JWT Generator, with tokens verified by Cognito and stored in ElastiCache for fast validation. Auth events flow asynchronously through EventBridge to SNS for notifications and SQS for audit processing, while protected backend services (User Service and Resource Service) communicate through App Mesh with sidecar proxies for service discovery and observability. Shared infrastructure including Secrets Manager, KMS, WAF, Shield, CloudTrail, and CloudWatch provides encryption, DDoS protection, audit logging, and monitoring across all layers. Fork this diagram on Diagrams.so to customize token expiration policies, add additional bounded contexts, or integrate with your existing AWS security posture.