Over the past few years Virtualization has become the new IT buzzword, cropping up in technologies from the end-user client environment all the way back through the Data Center into application, storage, and delivery networks. While Virtualization is solid technology, one definition for this word doesn't cover all parts of the virtualization story. What does virtualization mean within the context of end-users, operating systems, application server, management, etc? These are the questions that all IT departments are dealing with today as they plan their various virtualization migration plans. Before you begin to move towards a fully virtual user and Data Center environment, learn where each independent virtualization category sits in your environment and how to address each one individually.