Kubernetes networking architecture illustrating external traffic flow through Ingress Controller to ClusterIP Services, with kube-proxy managing iptables rules. Shows DNS resolution via CoreDNS, network policies for pod-to-pod isolation, and optional service mesh sidecar proxies. Fork this diagram on Diagrams.so to customize the network policy rules or add a service mesh like Istio for your microservices. Source: https://kubernetes.io/docs/concepts/architecture/