title: What is a service bus and when do I need one?
body: <p>I have heard talk about the <a href="http://particular.net/nservicebus" rel="nofollow noreferrer">NServiceBus</a>, but I haven't really understood what it is. They claim to be &quot;The most popular open-source  service bus for .net&quot;.</p>
  <p>What is a service bus, and when do I need one?</p>