Description: A finalizer in Kubernetes is a mechanism that allows executing custom cleanup logic before a resource is deleted. This process is crucial to ensure that appropriate cleanup tasks are performed, such as releasing resources, deleting temporary data, or executing specific scripts that may be necessary to maintain system integrity. Finalizers are part of the Kubernetes architecture and are used to manage the lifecycle of resources, ensuring that certain procedures are followed before an object is completely removed from the cluster. This is especially relevant in cloud-native environments where resource management and data cleanup are essential for the efficient operation of applications. Finalizers allow developers and system administrators to have more granular control over the lifecycle of resources, facilitating the implementation of more complex resource management policies tailored to the specific needs of each application or service in operation.