A terminal server enables organizations to connect devices with a serial port to a local area network (LAN). Products marketed as terminal servers can be very simple devices that do not offer any security functionality, such as data encryption and user authentication.

Сервер терминалов на Windows server 2016 для 1С. Богдан Кухар. [Windows Server 2012 basics] Урок 13 - Remote Desktop Services (Terminal Server).

Terminal servers enable businesses to centrally host applications and resources and publish them to remote client devices, regardless of the location and platform of the end-user device.