Link: http://technet.microsoft.com/en-us/library/hh881883

The Web Application Availability Monitoring template lets you create availability monitoring tests for one or more web application URLs and run these monitoring tests from internal locations. In addition to state and alert views, you can display the status of these tests in a provided map dashboard and a details dashboard.

 

Other links: http://kevingreeneitblog.blogspot.se/2012/01/scom-2012-monitoring-system-center-2012.html