title: What is the purpose of the configuration manager in Visual Studio 2010?
body: <p>I'm a little unsure about what the purpose of the configuration manaeger is.  To avoid confusion this is what I mean</p>
  
  <p><img src="https://i.stack.imgur.com/bcPmh.png" alt="enter image description here"></p>
  
  <p>In particular I'm interested to know what the point of the point of the Configuration column is.  Why can I set a Debug Configuration, against DataAccess, to Debug when at the top, for the Active solution configuration I have set UAT?  What does all this mean anyway?  What is an active solution configuration and what is a configuration?</p>