We've been working with IBM and others on the formation of the WSTF . Thanks to Andrew Dinn for the Web Services Transactions scenario work and Alessio Soldano for our WS-Addressing participation. Interoperability is something that I've been pushing for many years and we've always participated in as many of the official standards-based events as we possibly can . We're also members of WS-I and Apache Stonehenge , so you can be assured that Web Service interoperability will remain high on our agenda.