AWS mobile application backend architecture combines Amplify, AppSync GraphQL API, and Cognito authentication with multi-tier compute and data layers. CloudFront and WAF protect the edge, routing authenticated requests through AppSync to an Application Load Balancer distributing traffic across ECS Fargate containers, EC2 t3.medium instances, and Lambda functions. The private app tier connects to RDS db.t3.small PostgreSQL, ElastiCache for session caching, and EFS for shared storage, with all secrets managed by Secrets Manager and data encrypted via KMS. This architecture demonstrates AWS best practices for mobile backends: managed authentication, GraphQL federation, container orchestration, automated backups via AWS Backup, and cost visibility through Cost Explorer. Fork this diagram on Diagrams.so to customize instance types, add API Gateway REST endpoints, or integrate Amazon Pinpoint for push notifications and download as SVG for your architecture review decks.