Scaling DNS in Multi-Cluster Kubernetes with ExternalDNS (AWS Route 53 )

Scaling Kubernetes DNS with ExternalDNS and Route 53 As our Kubernetes platform scaled across multiple environments and regions, DNS management started becoming a bottleneck. What initially worked as a centralized setup began to introduce operational challenges such as API throttling and increasing manual effort. In this article, I’ll walk through how we evolved our DNS architecture using ExternalDNS with AWS Route 53 and the improvements we achieved. What is ExternalDNS? ExternalDNS is a Kubern