Windows Vista Enterprise along with the Microsoft Desktop Optimization Pack is a more manageable client operating system, which provides the ability to reduce deployment and costs and increase operational efficiency to IT Professionals responsible for managing the desktop. In addition, Microsoft Deployment provides detailed guidance and job aids for every organizational role involved with large-scale deployment projects.
"The Microsoft Desktop Optimization Pack (MDOP) for Software Assurance is a suite of six products sold as an add-on subscription license available to Software Assurance customers. MDOP uses innovative technologies to help reduce the total cost of ownership (TCO) of the Windows desktop by accelerating operating system and application management and enhancing IT responsiveness and user uptime. MDOP will enable you to better control the desktop, accelerate and simplify desktop deployments and management, and create a dynamic infrastructure by turning software into centrally managed services"
source: http://www.microsoft.com/windows/enterprise/technologies/mdop.aspx
