AWS Command Center is a multi-layer API monitoring and mock server platform combining CloudFront CDN, API Gateway with WAF, and EKS-hosted microservices for intelligent request routing. The architecture routes traffic through JWT authentication, RBAC/IAM policies, and a virtualization decision engine that dynamically switches between real APIs and WireMock mock servers based on scenario configuration. RDS PostgreSQL stores API registrations and stub definitions while ElastiCache Redis caches health metrics; EventBridge and Lambda functions asynchronously execute health checks, API capture, and cleanup tasks. This design enables teams to test API integrations, simulate failure scenarios, and validate client resilience without impacting production systems. Fork this diagram on Diagrams.so to customize subnets, add additional Lambda workflows, or integrate with your CI/CD pipeline for automated mock generation.