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AWS EKS Traffic Flow in Production: Route 53 to Pods & RDS BreakdownIn production AWS EKS setups, Kubernetes excels at secure, scalable traffic handling for SaaS, fintech, and enterprise apps. This pdf shows a battle-tested pattern.Request Lifecycle:User Browser → Route 53: DNS resolves app domain to ALB, supporting health checks & failover.Public Subnet ALB: Single internet entry via IGW. Terminates TLS, routes by host/path via security groups & listener rules → NLB target groups.Private Subnet EKS Nodes: No public access. NAT Gateway for outbound (e.g., image pulls). NGINX Ingress → ClusterIP services → Pods.Pods → RDS: Internal private links only. DB subnet w/ no IGW; security groups allow pod traffic exclusively.Security Layers:NACLs (subnet stateless filters)Security Groups (stateful, per resource)K8s Network Policies (pod-level)Defense-in-depth minimizes blast radius. Add observability for true resilience.This setup ensures isolation, scalability & ops confidence—no direct node internet, controlled routing everywhere.