Lawrence Chan and Jeff Pennal recently spoke at the Vancouver Tech Fest on Designing Interoperable Web Services. This year's event was the first ever, and given the great turnout I'm sure it will continue in the future.
Here are Lawrence and Jeff's slides:
View more presentations from dgibbons.
Thanks to Medhat for inviting us out as well as the rest of the TechFest team for putting on a great event.