Platform architecture

In this post I will not explain the insides of message broker. I want  to explain that you have to have to use (develop, run) on WMB.
There are three main parts:

• Runtime – it is websphere message broker itself. It is the “place” where your code (application)  works. You may liken it to “Application Server”. Runtime has “Execution groups” – it is named OS processes that host and execute applications. Into EG you deploy applications, which generally includes:
• Message Sets – descriptions of message format (liken XSD)
• Message Flow – compiled code, that hosts application logic.
• Design Time – it is Message  Broker Toolkit. It is eclipse-based IDE(Integrated Development Environment) where you develop you code (application). Repository at picture below means some version control system which you can include to store source codes.
• Management – its are Message Broker Explorer and  Command console. You may use its to deploy applications, start/stop runtime and so on.