Server types refer to the various configurations and roles that servers can fulfill in a network. Common types include web servers, which host websites and deliver content to users, and database servers, which store and manage data for applications. Other types include file servers, which provide centralized storage for files, and application servers, which run specific applications and services for users. Additionally, there are mail servers that handle email communication, and game servers that host online multiplayer games. Each server type is designed to perform specific tasks, optimizing performance and resource management within a network environment.