This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Using MDB with EJB 2.0 you sure could implement asynchronous messaging. You could also establish this with SOAP with the advantage that your firewalls are going to let the HTTPS requests through. If you are thinking about messaging mention in your assumptions that you expect a messaging server over HTTPS to be available on the TransMaster's side. [ May 26, 2007: Message edited by: John Meyers ]