Windows Small Business Server 2011 Premium Add-On gives small businesses a flexible and cost-effective solution for deploying additional servers on a network running Windows Small Business Server 2011.
Run a multitude of line-of-business applications on an additional server
Access to full Windows Server 2008 R2 Standard Technologies
Make more informed business decisions with the high-capacity, rich analysis, and reporting technologies
Cost-effective solution for a small-business environment