title: Windows Azure Access Control with ASP.NET Membership
body: <p>I have an existing production application that uses vanilla ASP.Net Membership for authentication. </p>
  
  <p>However, I'd like to provide other means of authentication as well as the current ASP.net membership system, such as Facebook. </p>
  
  <p>The Windows Azure Access Control Service makes this extremely easy and straight forward. Provided, that is, you're starting a new web application from scratch.</p>
  
  <p>So, in this case, how do I </p>
  
  <ol>
  <li>Integrate the Access Control Service authentication into my app without affecting the current login system and its users?</li>
  <li>Migrate users over or Link logins? ( not sure if this is even possible)</li>
  </ol>
  
  <p>Thanks all</p>
  
  <p>Roberto</p>