title: Why does .NET generate two web.config files in an MVC asp.net application?
body: <p>I am new in MVC 3. What is the reason to use two web.config files?</p>
  
  <p><img src="https://i.stack.imgur.com/cZgJ8.png" alt="enter image description here"></p>
  
  <p>What is difference between that 2 web.config files, and what is the purpose of each and its function? </p>