Take a look at the following screenshot. This shows the new graphical mapping designer that is accessible from Visual Studio 2012. For those familiar with BizTalk Server, don't be fooled. While it may have a similar look and feel to the BizTalk Server mapper, this tool has significant differences; the overriding design aesthetic was to make common mapping tasks as simple as possible, and as such, the mapper has undergone a significant overhaul.

Graphical mapping designer