Soap over JMS is a very good idea, I think. But there need to be some work done on the productivity and connectivity, to be really useful. I would not dare to say that there is no future for Soap over JMS. But I think in most cases I would need the reliability over a very long distance... If you do indeed have the same requirement (reliable messaging over a long distance) I would suggest you take a look into the ebXML/ebMS standards. Oracle Integration B2B for example could help you with that.