Microsoft SharePoint Server 2013 Enterprise CAL - buy-out fee

SharePoint Server 2013 is designed to help you achieve new levels of reliability and performance, delivering features and capabilities that simplify administration, protect communications and information, and empower users while meeting their demands for greater business mobility.

SharePoint 2013 is the new way to work together. A simplified user experience helps you organize, sync and share all your content. New social capabilities make it easy to share ideas, keep track of what your colleagues are working on, and discover experts you never knew existed.