Windows Server 2008 R2 Standard is a robust and reliable foundation on which to develop, deliver, and manage rich user experiences and applications. Windows Server 2008 R2 Standard provides a secure network infrastructure and reduces costs while increasing technological flexibility and value within your organization.

The Operating System for Large-Scale Virtualization and Scale-Up Workloads

Windows Server 2008 R2 Enterprise is an optimal operating system for servers running applications such as networking, messaging, inventory, databases, and customer service systems

Apply intelligent and advanced diagrams in business-process analysis/BPM, compliance/quality, and rule-based diagrams.  Share interactive, refreshable, data-linked diagrams with others via their Web browsers, 

Expression Studio Web Professional combines Expression Web with Expression Design and Expression Encoder to give you a full graphic, video, and web design suite.  This suite combines exactly what most web designers need to create great sites with strong support for languages like PHP, HTML, CSS, and ASP.Net.  

Expression Studio Ultimate combines Expression Web with Expression Design, Expression Blend, Encoder Pro, and SketchFlow to give you a full graphic, video, and web design suite.  Expression Studio Ultimate is perfect for the developer who works mostly on ASP.Net projects. There is extensive support for ASP.Net and Silverlight.