. Windows Server system is a comprehensive integrated and interoperable server infrastructure designed to meet the demanding needs of developers and IT professionals and to flexibly run the programs and solutions that enable information workers to reach analyze and share information quickly and easily. MICROSOFT OPEN LICENSE VOLUME PROGRAM Microsoft Open License is a software volume licensing program designed for corporate government charity and academic customers who order as few as five licenses. After the initial order customers can benefit from volume pricing for all licenses for the remainder of the term of their Open License authorization number.With Open License Volume you can potentially save a lot if your organization is able to make a large initial up-front order in one or more product pools (applications systems servers). SOFTWARE ASSURANCE Microsoft\'s Software Assurance gives you automatic access to new technology and provides productivity benefits support tools and training to help deploy and use software efficiently.With Software Assurance you receive access to new versions of licensed software released during the term of your agreement to deploy at your own pace. New Version Rights simplifies the procurement process and shortens the business process cycle allowing you to reduce the costs associated with acquiring new version releases and immediately take advantage of the latest technology..