The article explores efficient methods for managing multiple Kubernetes clusters using Argo CD Application Sets and emphasizes the use of cluster labels over ad-hoc configurations. It details how Application Sets automate application deployments across various clusters by using cluster and Git generators, allowing for streamlined management without the need for individual YAML configurations. The article critiques the complexity of snowflake server setups, where specific applications are manually enabled or disabled for each cluster, advocating instead for a scalable approach using cluster labels that model cluster groups, thereby reducing maintenance efforts and facilitating easier communication between developers and operators. Through practical scenarios, it illustrates how cluster labels can simplify tasks like deploying applications to clusters based on environment or region, managing configurations with Kustomize overlays or Helm values, and adding or removing clusters without altering application sets, ultimately demonstrating a more automated, efficient process that minimizes manual intervention and supports organizational agility.