Microsoft Windows Server 2012 R2 Datacenter License has impressive collaboration functions. Users can get every feature in Word, Excel and all the rest of the Microsoft Windows Server 2012 R2 Datacenter License software portfolio, plus the means to collaborate on that content in real time. Assuming you set it up properly, users can make comments on documents in their own handwriting, host a chat about a spreadsheet, and turn an email thread into a real-time video meeting. There are also impressive content management tools, revision management systems, and even tools that let a business decide how files should be named.