About This Architecture

AWS serverless dev/test architecture combining CloudFront CDN, API Gateway, Lambda functions, and managed databases for a complete application stack. Traffic flows from users through CloudFront and Route 53 DNS, protected by WAF, then routed via ALB to API Gateway where Cognito handles authentication before Lambda functions process requests. Lambda integrates with RDS PostgreSQL, MongoDB, ElastiCache Redis, S3, and event-driven SQS queues, with all secrets encrypted via KMS and observability through CloudWatch. This single-AZ design optimizes costs at $685/mo CAD by using serverless compute with auto-scaling, shared database instances, and minimal data transfer, making it ideal for development and testing workloads. Fork and customize this diagram on Diagrams.so to adjust instance sizes, storage allocations, or add additional AWS services for your specific use case.

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How do I design a cost-effective AWS serverless architecture for development and testing that integrates multiple databases and maintains security?

This diagram shows a complete AWS serverless dev/test stack using Lambda for compute, API Gateway for REST endpoints, RDS PostgreSQL and MongoDB for data persistence, and ElastiCache for caching—all protected by CloudFront CDN, WAF, and Cognito authentication. The single-AZ design with shared database instances and event-driven SQS queues keeps costs at $685/mo CAD while providing production-like