What is the purpose of a server and what types of programs are usually run on it?

A server is a powerful computer designed to manage network resources, provide data, and offer services to other computers (clients) over a network. Its primary purpose is to host applications, store data, and facilitate communication between devices. Common types of programs run on servers include web servers (hosting websites), database servers (managing databases), file servers (storing and sharing files), and application servers (running specific applications for users).