This document provides an overview of virtual desktops and virtual desktop infrastructure (VDI). It explains that a virtual desktop runs on a remote server rather than the local computer, allowing users to access their desktop from multiple devices. VDI allows an organization to host hundreds of virtual desktops on a single high-performance server for many users. Key benefits of VDI include cost savings, easier management and updates, improved security if no sensitive files are stored on devices, and reduced energy costs compared to physical desktop computers. However, legacy VDI solutions can have slow performance issues, but solution 4 claims to solve this problem by guaranteeing 2 to 8 times faster performance than physical PCs.