What is the architecture of Kubernetes?

The architecture of Kubernetes consists of folowing components:
Master : There is a master node that is responsible for managing the cluster. Master performs folowing functions in a cluster.
I. Scheduling Applications
II. Maintaining desired state of applications
III. Scaling applications
IV. Applying updates to applications

Nodes : A Node in Kubernetes is responsible for running an application. The Node can be a Virtual Machine or a Computer
in the cluster. There is software caled Kubelet on each node. This software is used for managing the node and communicating
with the Master node in cluster.