This document provides an overview of virtualization and VMware's virtualization platform vSphere. It begins with defining virtualization as using software to run multiple virtual machines on a single physical machine, sharing resources to improve utilization. It then discusses VMware's history and role as the market leader in virtualization. The document outlines the key benefits of virtualization such as reducing costs, increasing flexibility and enabling business agility. It provides an overview of vSphere's capabilities to deliver high availability, live migration, storage efficiency and faster disaster recovery. Overall, the document promotes virtualization and vSphere as a way to simplify IT operations and lower costs while increasing business agility.