title: Which .NET Service Bus to migrate to Azure
body: <p>I need to develop a web app which needs to 'talk' to lots of other apps/api's as well as implementing real time notifications to users and standard Publish/Subscribe type functionality.</p>
  
  <p>The client wants to develop on-premises and then migrate to Azure in the near(ish) future. Which .NET Service Bus is best suited for this requirement?</p>