A Server Operating System (Server OS) is an Operating System particularly designed to run on servers. This OS operates within a server architecture to serve the requests of client computers on the network. The Server OS can run the server hardware and help enable and assist distinctive server roles such as Web Server, Mail Server, Database server, Application server and Print Server.
Windows OS is an Operating System developed by the Microsoft Corporation to run on Personal Computers. It offers graphical user interface, multitasking functionalities, virtual memory management capabilities, and support for several peripheral devices. It is composed of client as well as server versions.
Linux OS is the renowned and widely used OS that works on computers, servers, mainframes, mobile devices and embedded devices. Its modularity in design is the key to its many variations and distributions.
Ubuntu is an Open Source Software OS that runs on every device that is connect to Internet. It consists of many software packages and allows users to copy, change, develop and redistribute their own version of the program.