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+---
+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.
+
+<!--more-->
+
+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.