We could almost say that the combination of Kubernetes and Docker is the new vendor-agnostic Cloud OS.

“A cloud operating system is a type of operating system designed to operate within cloud computing and virtualization environments. A cloud operating system manages the operation, execution and processes of virtual machines, virtual servers and virtual infrastructure, as well as the back-end hardware and software resources.”

• “A cloud operating system may also be called a virtual operating system.
• A cloud operating system primarily manages the operation of one or more virtual machines within a virtualized environment. Depending on the virtual environment and cloud services in use, the functionality of cloud operating systems varies.”

“For example, a cloud operating system developed to be used within a computing-specific environment will manage the processes and threads of a single or cluster of virtual machines and servers. Similarly, a light-end cloud OS might provide end users with pre-installed applications and services, accessed through an Internet browser such as Chrome OS. Microsoft Azure and Google Chrome OS are among current examples of cloud operating systems.”

Fair Use Source: https://www.techopedia.com/definition/26867/cloud-operating-system-cloud-os