website/content/en/docs/reference/glossary/kube-apiserver.md

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API server kube-apiserver 2018-04-12 /docs/concepts/overview/components/#kube-apiserver Control plane component that serves the Kubernetes API.
kube-apiserver
architecture
fundamental

The API server is a component of the Kubernetes {{< glossary_tooltip text="control plane" term_id="control-plane" >}} that exposes the Kubernetes API. The API server is the front end for the Kubernetes control plane.

The main implementation of a Kubernetes API server is kube-apiserver. kube-apiserver is designed to scale horizontally—that is, it scales by deploying more instances. You can run several instances of kube-apiserver and balance traffic between those instances.