Multi-tier Angular frontend architecture leveraging AWS Cognito for authentication, CloudFront CDN with WAF protection, and Lambda-based API proxies connecting to MuleSoft API Layer. Traffic flows from users through CloudFront and Route 53 to an Application Load Balancer serving the Angular SPA from S3, while authenticated API requests route through API Gateway to Lambda functions that integrate with MuleSoft for backend system access. DynamoDB stores session data, Secrets Manager secures API keys, and CloudWatch provides observability across the Lambda proxy layer, demonstrating AWS best practices for decoupling frontend presentation from enterprise backend systems. This architecture solves the challenge of securely exposing legacy backend APIs to modern SPAs while maintaining centralized authentication, rate limiting, and monitoring. Fork this diagram on Diagrams.so to customize VPC CIDR ranges, add additional availability zones, or integrate alternative API management platforms beyond MuleSoft.