Kubernetes uses declarative API which makes the system more robust. But, this means that we create an object using CLI or REST to represent what we want the system to do. For representation, we need to define things like API resource name, group, and version. But users get confused. The main reason for the confusion is that we as humans are not good at remembering things like this. In one deployment definition you could see this apiVersion: apps/v1beta2, and ...
