Service Bus and push notifications to device

Hi,

         I am researching how a Cloud service app. should work to handle a Service Bus on one side and WebSockets on the other. The app. should react to messages and push them to devices. I am looking for any material on such designs but also how this could scale. It seems that the Bus could scale better than the cloud service app. NumberDevices could grow too. What are the design considerations ?

I don't think we are looking for https://azure.microsoft.com/en-in/services/notification-hubs/ ?

Thanks,

Mohan