User virtualization provides a standardized component-based model for desktop virtualization. It treats the user environment as a separate component that can be managed independently of the operating system and applications. This allows for a single standardized desktop image while still providing personalized environments for users. User virtualization solves issues around profile management, personalization, and migration to non-persistent desktops. It is implemented through policy to configure the desktop, personalization for user customizations, and storage of user data, applications, and settings independently of the operating system. AppSense is a leading provider of user virtualization technology and works closely with Microsoft, Citrix, and VMware to provide user-centric desktop virtualization solutions.