About This Architecture

Enterprise banking platform architecture spanning three AWS VPCs with segregated experience, process, and system layers, integrating on-premise systems via hybrid connectivity. Traffic flows through Route 53 and CloudFront to API Gateway endpoints protected by WAF and Shield, with OAuth2/mTLS authentication via Cognito and partner integrations. Middleware layer orchestrates workloads across Step Functions, ECS/EKS, EventBridge, and Glue ETL, while backend layer serves RDS Aurora, DynamoDB, and S3 through VPC endpoints and private subnets. Governance spans CloudWatch, X-Ray, CloudTrail, GuardDuty, and cross-account observability for compliance and security monitoring. Fork this diagram on Diagrams.so to customize subnets, add regions, or adjust scaling policies for your banking workloads.

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How do I design a secure, scalable AWS banking platform that integrates on-premise systems with multi-tier API layers and hybrid connectivity?

This diagram shows a three-VPC AWS architecture separating concerns: experience layer handles public/partner APIs with WAF and CloudFront, process layer orchestrates workflows via Step Functions and EventBridge, and system layer manages databases and storage. Hybrid connectivity via Transit Gateway and Direct Connect integrates on-premise banking systems, while cross-account CloudWatch, X-Ray, and