1. Using federation, we can run multiple Kubernetes clusters on-premise and in one or more public cloud providers and manage applications utilizing the entire set of our organizational resources.
2. Federation allows you increase the availability and tenancy capabilities of your Kubernetes clusters.
3. Resource synchronization across clusters and multi-cluster service discovery.
4. Kubefed.
5. Federation-controller-manager and the federation-apiserver.
6. HPAs will act in a similar fashion to normal HPAs, with the same functionality and same API-based compatibility—only, with federation, the management of pods will traverse your clusters.
7. Deployments, ReplicaSets, Events, ConfigMaps, DaemonSets, Ingress, Namespaces, Secrets, and Services.