- Definition: Virtualization
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Virtualization refers to functionality that makes it possible to break down the physical barriers between IT assets. Also related to the topical phrase "On Demand," the principle of virtualization is that IT resources should be able to be dynamically applied to satisfy immediate need, possibly beyond the physical limit of the current environment. In the past, assets such as memory and processing power are fixed to a particular physical presence such as a server. Any attempt to exceed these limits would fail. With virtualization, "virtual" assets are applied from an asset pool, allocated dynamically. If more memory or power is required, more can be assigned automatically. Virtualization enables IT assets to be utilized much more effectively, since instead of having multiple assets that have to scale to peaks and troughs of demand, the user has a single pool of assets where peaks and troughs can be evened out.
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