Dedicated server

A dedicated server is a computer that runs dedicated server software (Which is usually a console/command prompt version of a game, so there is no graphics to process) and is usually only used for running servers, hence the name dedicated. Dedicated servers are usually hosted in data centers with fast upload speeds, but sometimes they can be run from home; although these servers are less reliable. Dedicated servers are normally up for 24 hours a day, 7 days a week; only coming down when something goes wrong or the server owner wants it down.

How do I make one?
To make a dedicated server, use the following tutorial brought to you by Citricsquid:

Tutorial on running Minecraft on a dedicated server!