https://kubernetes.io/docs/concepts/overview/working-with-objects/finalizers/

https://kubernetes.io/blog/2021/05/14/using-finalizers-to-control-deletion/

Owners and Dependents

https://kubernetes.io/docs/concepts/overview/working-with-objects/owners-dependents/

Garbage Collection

https://kubernetes.io/docs/concepts/architecture/garbage-collection/#cascading-deletion

Casecading Deletion

https://kubernetes.io/docs/tasks/administer-cluster/use-cascading-deletion/