Server systems become useful as soon as an organization exceeds a number of 2-3 people who need to work together. A server is dedicated to the storage and distribution of files (documents, audio, video, etc.), but also services, such as electronic mail. The distribution is done to individual computers through a local network (LAN) or the Internet. Server systems have two components, one hardware, the device itself, and one software - the application that manages the mode of operation and use.

Servers are scalable, meaning they can support a variable number of PCs, support simultaneous connections, without the transfer speed being significantly affected and offer improved security, thanks to a better authentication and authorization system permissions.