# Which file names does Kustomize accept for the kustomization file in a directory?

Kustomize, Medium (Advanced), Concepts. https://k8wiz.com/uquiz/which-file-names-does-kustomize-accept-for-the-kustomization-file-in-a-directory

- A. Any YAML file in the directory whose kind is Kustomization
- B. kustomize.yaml or kustomize.yml
- C. Only kustomization.yaml
- D. kustomization.yaml, kustomization.yml or Kustomization

**Answer:** kustomization.yaml, kustomization.yml or Kustomization

**Explanation:** Kustomize looks for one of those three names in each directory it builds, and fails if a directory has more than one. Inside the file, kind is Kustomization, or Component for a component.