I was on the MSDN Forums for the ESB Toolkit this morning, and came across a question from fellow BizTalk developer Barry Woods. He was asking about routing decisions in itineraries, so I threw in my two cents on the topic. Then I stepped back for a second and realized that there is a fantastic feature of the ESB Toolkit 2.0 that no one talks about. This enigmatic feature stealthily crept into the Toolbox in Visual Studio, when you weren't looking. It takes up two slots in the toolbox, because two are necessary to compose its awesomeness. I'm referring to the "Itinerary Broker Service" and the "Itinerary Broker Output"; together they make up the feature that is the broker service.