Kustomize provides developers a declarative way to create variations in their Kubernetes configs by creating overlays. By using these overlays a list of changes/modifications can be applied to the base configuration. A layered solution like this can be leveraged, the original base configuration can remain untouched.
Kustomise is most beneficial when working with multiple environments with unique config requirements.It can accommodate these easily by creating a separate overlay for each environment.
Kustomize makes use of YAML artifacts instead of a templating syntax for the overlays. This is why the configurations remain readable and the overlays look and behave like traditional Kubernetes configs.
