title: What is the difference between ASP.NET dev server and IIS Express?
body: <p>Visual Studio SP1 has a facility to run the Webmatrix aka "IIS Express" from Visual Studio instead of the VS development server. </p>
  
  <p>What is the difference between both? [ VS development server or IIS express].</p>
  
  <p>Is there anything new and interesting for this topic?</p>