I am reading the article Secure, Reliable, Transacted Web Services: Architecture and Composition on MSDN. It is a comprehensive summary of the specification comprising the current state of the Web Services techology stack. The article touches on the recently released specs for WS-AtomicTransaction and WS-BusinessActivity (which will be published soon according to Omri Gazitt) and concludes explaining the architecture of the Web Services/SOA demo given recently by Bill Gates and IBM's Steve Mills...