A terminal server is a server or network device that enables connections to multiple client systems to connect to a LAN network without using a modem or a network interface. Microsoft introduced this concept by releasing terminal services as a part of the Windows Server operating system.
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.
A cloud server is a virtual server (rather than a physical server) running in a cloud computing environment. It is built, hosted and delivered via a cloud computing platform via the internet, and can be accessed remotely. ... Cloud servers have all the software they require to run and can function as independent units.
A small business server is typically a low-end server designed to be affordable and manageable in a small business environment. Small Business servers are suitable for one to dozens of employees and may come pre-installed with the software needed to run the server.