title: Install IIS alongside ADFS 3.0
body: <p>I understand ADFS 3.0 has removed the need for IIS and that it's run directly out of HTTP.SYS now.</p>
  
  <p>So does this mean it's not even possible to add IIS back so one could implement a custom FormsAuth (web forms) type integration as you used to be able to do under ADFS 2.0?</p>
  
  <p>Or is it all Shibboleth these days?</p>
  
  <p><strong>Edit:</strong> We've been able to successfully deploy our own custom authentication provider in ADFS 3.0 (adjacent to Active Directory) and use it to SSO into Office 365 so this is no longer required. See <a href="https://stackoverflow.com/q/38860667/901156">Implementing Office 365 single sign-on using custom authentication/claims provider in ADFS 3.0 (RE: AADSTS90019)</a></p>