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A way of separating applications running on the same serverA computer with a dedicated purpose. Older familiar examples are print servers (a computer that controls local printing) and file servers (a computer used for storing files centrally). More modern examples are web servers (the computers that handle your web requests when you use your browser) or application servers (computers dedicated to handling the computing needs of a specific application). Servers are often powerful, expensive machines since they have to handle a heavy load.. It’s lighter-weight than a full virtual machineA way of configuring a portion of a real-world computer to look and act like a complete computer on its own. The idea is to have multiple virtual machines on a single real machine..