title: What's the difference between Web App and Virtual Folder in the context of IIS 7.x?
body: <p>As I deploy my web site, I found that I could convert a folder into a virtual folder or web application, I am totally confused about these 2 concepts. </p>
  
  <ul>
  <li><p>Why there are two different types?</p></li>
  <li><p>What's the purpose of each?</p></li>
  </ul>