Docker 是一個用於實現容器化 (containerization) 的工具，所謂的容器化就是讓服務的 OS 層或是應用層虛擬化，讓各個 services 間達到完全隔離，彼此不互相污染。

Kubernetes is an open-source container orchestration platform. Kubernetes is used to automate the deployment, scaling, and management of containerized applications.