title: Is BizTalk an ESB?
body: <p>I am looking into architectural patterns, Enterprise Services Bus (ESB) precisely. Upon reading this article <a href="http://hosteddocs.ittoolbox.com/Enterprise%20Integration%20-%20SOA%20vs%20EAI%20vs%20ESB.pdf" rel="nofollow noreferrer">Enterprise Integration</a>, and with little to no experience I am wondering if BizTalk has is a ESB or is it just a EAI (Hub/Spokes or Bus)?</p>
  
  <p>I found this <a href="http://docs.particular.net/nservicebus/architecture/nservicebus-and-biztalk" rel="nofollow noreferrer">NServiceBus and Biztalk</a>, describing BizTalk as a central message broker.</p>
  
  <p>Taking other ESB frameworks into account (NServiceBus and Rhino Service Bus). These frameworks have no central point to process messages.</p>
  
  <p>Is Biztalk a EAI rather than an ESB? </p>
  
  <p>Many thanks</p>