Cloud OS describes an operating system which is designed primarily for tablets and netbooks that can access internet applications and data which is stored in remote servers. The cloud OS is an operating system which has been designed for operation within cloud environments and virtualized settings. In that sense, this operating system will be responsible for managing the running, execution and methods for virtual machines, servers and a virtual set-up, software resources and back-end hardware. This explains why the cloud operating system is also popularly called the virtual operating system. Its functioning is also likely to vary depending on the nature of the virtual environment.
A light-end cloud OS for example will be able to cater to users that have pre-installed applications which can be accessed through web browsers. Google Chrome OS and Microsoft Windows Azure are two popular examples of cloud operating systems. The cloud OS which is created for use within a computing-specific setting will be responsible for managing the processes of either a single server or groups of virtual servers.