id: CustomResourceDefinition
name: CustomResourceDefinition
aka: 
- CRD
- Formerly Known as ThirdPartyResources (TPR)
tags:
- fundamental
- operation
- extension
full-link: docs/tasks/access-kubernetes-api/extend-api-custom-resource-definitions/
short-description: >
  Custom code that defines a resource to add to your Kubernetes API server without building a complete custom server.
long-description: >
  Custom Resource Definitions let you extend the Kubernetes API for your environment if the publicly supported API resources can't meet your needs.