Edson, In the use case I describe the OrderService and CustomerService are not the producers of the events, the events are produced outside the ESB. The purpose of the use case is to describe how multiple services could receive different event streams and insert these different event streams into the same working memory. The purpose of have different services handle the different event streams, as mentioned in earlier post, would be performance / scalability and autonomy. Also, could you comment at some point in this thread how greater scalability could be achieved by having the different services on different services in a cluster, and having the working memory distributed between the servers (if this is actually possible?) Thanks, Jeff View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240113#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...