So this post is a bit late, but on the 13th I spoke at the OBA Architect Forum at our offices in London.

The principal reason (apart from helping out with a lot of OBA stuff this coming year) was that we have some great business applications with great hooks; easy web service interfaces, .NET Business Connector, SQL Analysis Services cube generation and processing. 

The principle of OBA is great - take a look at www.obacentral.com for all of the material people have been submitting.  Unfortunately I see a lot of demonstrations which talk a good game but don't actually use a business application on the back-end.  I focus on two applications here at Microsoft; Dynamics AX and Dynamics CRM - the new 'Titan' release is imminent and I'll be blogging features in my next post.  If you're a UK ISV interested in building great OBA architectures on real business data then we're interested in talking to you.

Postings from colleagues:

Matt Deacon (including post-event decks)

David Gristwood

Darren Strange