What Is Virtualization ? Definition & Principe

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Definition:

It is a set of techniques for doing
run multiple operating systems (OS) on one
only physical machine.

Sharing:

The principle of virtualization is first of all a principle of
sharing: the different operating systems are shared
the resources of a single material

Partitioning or insulation:

In the case of a traditional system, the execution of several
applications on a single server increases the risk
interruption of service.
In the case of virtualization, the partitioning allows each
operating system to have a functioning
independent and does not interfere with others

Transparency:

The fact of operating in virtualized mode does not change anything
operation of the operating system or
applications.
Transparency implies compatibility: all
applications can run on a virtualized system without
that their operation is not modified.

Portability:

Thanks to the principle of partitioning, virtualization
enables portability of applications by isolating them from
operating system on which they are executed.

Examples of virtualization:

Virtualization can affect several areas
Hardware virtualization
Presentation virtualization
Application virtualization
Server virtualization
Storage virtualization
Network virtualization