Microsoft is the worldwide leader in software, services and Internet technologies for personal and business computing. The company offers a wide range of products and services designed to empower people through great software - any time, any place and on any device.The Enterprise Desktop Professional Platform includes the most current versions of Office Professional, Windows Desktop Operating System Upgrade or any specified prior version of Windows (Windows 95, Windows 98 or any prior version of Windows NT Workstation) and the BackOffice Client Access License.