title: Are there benefits to using LDAP for Auth for a single application?
body: <p>I worked on a project a while back where the Architect decided to use LDAP for managing authentication / authorization, rather than a traditional database approach.  </p>
  
  <p>The application was expected to scale rapidly by approx 500 - 1000 users a day, and then plateau at around 200k users.  Beyond that, there was nothing special about this application.</p>
  
  <p>I didn't ask at the time, but I'm curious around why we would've used LDAP here.</p>
  
  <p>As I understand it, the real strengths of LDAP lie in organizations where users are required to authenticate against several disconnected systems, and LDAP provides a single auth provider.  </p>
  
  <p>Are there additional benefits that make it a good fit for certain applications?</p>