---
title: Extensions
id: Extensions
date: 2019-02-01
full_link: https://kubernetes.io/docs/concepts/extend-kubernetes/extend-cluster/#extensions
short_description: >
  Extensions are software components that extend and deeply integrate with Kubernetes to support new types of hardware.

aka:
tags:
- fundamental
- extension
---
 Extensions are software components that extend and deeply integrate with Kubernetes to support new types of hardware.

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Most cluster administrators will use a hosted or distribution instance of Kubernetes. As a result, most Kubernetes users will need to install [extensions](https://kubernetes.io/docs/concepts/extend-kubernetes/extend-cluster/#extensions) and fewer will need to author new ones.