"I hear operator all the time, and when people define an operator to me, I've never really understood what makes it different than custom resources. So an operator is another controller that listens to custom resource types that it has defined. But when people in common everyday language say operator, it is typically the package of things required to make that happen. The reason why you might use the term operator as well is because you might be speaking about the lifecycle management of something. So to summarize what you just said, the operator wraps up controllers, custom resource definitions with some additional dependencies into one unit. And then the second thing it does is it does application lifecycle management on that unit."