In the traditional computing a computing activity occurs within the confines of hardware, software and associated elements. For example, programming using a compiler (Turbo C) or using an application software such as word processing in a DOS or windows environment. This is true of Unix environment. An executable file generated in DOS or windows environments can not used in another environment, say Unix or Linux. But in the networked environment such as WWW, it is practical to expect everyone to have identical computing environments. In such situations making computing outputs generated in one environment renderable in another environment becomes a challenge. Virtualization is the answer to this challenge. Virtualization separates hardware from software, operating system from application software, server from client and many more. By doing so, it helps both users and service provider to wider range of computing environments. In simple terms, Virtualization abstracts computing resources.
Current industrial practices have come out with a variety of virtualizations such as server virtualization, platform virtualization, desktop virtualization and many more. To know more about the virtualization consult here
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