One of the mainstream words in the last couple of years (17-18). It was started inside Google and heavily influenced by “Borg” their own large scale cluster management technology.
Kubernetes is a concept based on the following components:
Service: A set of Pods that work together
Kubernetes Master: The main controller of the Unit.
Pod: A group of containerized components, it normally consists of one or more containers.
Container. The very essence of the whole concept, mainly Docker