Full-stack AWS serverless web application architecture combines AWS Amplify frontend with AppSync GraphQL API, Cognito authentication, and Lambda authorizers. Traffic flows through AWS WAF for security filtering, then Elastic Load Balancer distributes requests to ECS containers and Lambda functions within a VPC. Backend services leverage RDS for relational data, ElastiCache for session management, EFS for shared file storage, and S3 for media assets, with CloudWatch monitoring and AWS Backup ensuring observability and disaster recovery. This architecture demonstrates AWS best practices for building production-grade applications with defense-in-depth security, horizontal scalability, and managed service integration. Fork this diagram on Diagrams.so to customize compute tiers, add CI/CD pipelines, or adapt storage layers for your specific workload requirements.