This paper provides that Business and IT leaders have been demanding an IT infrastructure which is more dynamic and responsive to the quick pace of business while being less costly. By dynamic they mean the ability to deliver new applications at the speed in which to be responsive to market dynamics while creating competitive differentiation. For many, IT expenditures as a percentage of revenue are to be managed down. To address these industry requirements IT suppliers have offered virtualization technology and services. Network virtualization represents a new IT paradigm, which challenges existing assumptions and IT deployment models. In this paper we explore network virtualization as a strategy to make corporations more agile and IT expenditure efficient. Network virtualization is presented as a new approach to network design and IT service delivery. Its main four building blocks are presented along with guiding deployment principals.
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