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.
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?
Your short answer is "Windows Service Bus 1.1".
https://msdn.microsoft.com/en-us/library/dn282152.aspx
Ideally, you're going to write the same code and can deploy to either.
That does not mean there are no differences. Namely "security". Using " Shared Access Secrets" will be safe in both worlds.
Below are 2 URL's to help.
Azure Queues and Service Bus queues - compared and contrasted
Service Bus for Windows Server 1.1 Overview
https://msdn.microsoft.com/library/azure/dn282142.aspx
In both Microsoft Azure and Windows Server, Service Bus requires access tokens for authorizing access to its messaging entities. Both share the Shared Access Secrets (SAS) authentication scheme for Service Bus namespaces as well as entities (queues and topics).
However, in Windows Azure, Service Bus also supports the Microsoft Azure Active Directory Access Control (also known as Access Control Service or ACS), which is not available on Windows Server.
However, on Windows Server, Service Bus supports Windows integrated authentication (domain joined users and Active Directory user groups), which are not available in Azure.
