This document provides an overview of desktop virtualization and workplace mobility. It begins with a history of server-based computing and how virtual desktop infrastructure (VDI) emerged from earlier technologies. Next, it examines the current state of the desktop virtualization market, including major vendors, use cases, and adoption trends. Finally, it discusses some of the internal workings of desktop virtualization, including protocols, layering, and isolation techniques. The document aims to inform readers on the evolution and current landscape of desktop virtualization.