title: XMPP server in Amazon EC2
body: <p>Which XMPP server would you recommend for use in Amazon Web Services, running on EC2 instances?</p>
  
  <p>It should scale, with automatic (or at least easy) clustering being very useful - it's scaling should also support an XMPP server component. It would be nice if the automatic scaling could work with Amazon Auto Scaling.</p>
  
  <p>Which XMPP server (or even a different cloud offering) would you use? As far as I can tell OpenFire and Ejabberd are the most popular choices, but I'm concerned they won't scale well on EC2 instances.</p>