Internet Service BUS - CONNECTIVITY and MODELLING
Here is the latest ARCAST from Ron Jacobs who speaks to John Shewchuck and David Wortendyke about a new technology which has been silently announced to the web called the Enterprise Internet Service Bus.
This is a technology which is available in the cloud today on https://labs.biztalk.net as a prototype and provides a pub/sub communication system complete with WS-Trust support through CardSpace to control identity and access to services through claims - available on the Internet.
This builds many new potential scenarios as the technology is firewall friendly and accessible behind a NAT and provides a flexible identity system which allow parties from different companies to interact safely.
Pretty cool stuff, and here is the latest discussion with these guys about this.