I think this year TechEd Developers - EMEA (Barcelona) excelled by having great sessions, great content, and lots of information. It is most likely that this happened because it also was the TechEd where Visual Studio 2008 was announced by Microsoft to be released before the end of November (and in fact when you read this now, it is already released and available for MSDN Subscribers). There was a high number of representatives from a lot of the program groups and many developers from the Developer Division moved in from Redmond to show off their new features.

From the Trinity group (VSTO team) alone there where four (!) people doing presentations, Thomas Quinn, Eric Carter, Tony Crider and Christin Boyd.

One of the sessions I personally did like the most was the one from TQ (Thomas Quinn) called `OFF402 Visual Studio Tools for the Office System 3.0 Architecture´.

Here is the summary from the TechEd schedule book:

Visual Studio Tools for Office (VSTO) 3.0 is positioned as the default managed extensibility technology for Microsoft Office Business Applications. This session explores how VSTO makes this position viable, how add-ins and document-level solutions are both strongly-typed and version-resilient, and how the design of VSTO is maximally reusable in both Office and non-Office development scenarios. This session will also demonstrate how VSTO brings new technologies to Office, such as Windows Presentation Foundation (WPF), Windows Communication Foundation (WCF) and Language Integrated Query (LINQ).

What I liked about this session was the fact that for once it was a 400 session, so it was a great deep dive into the technologies that can be used in combination with developing tools for your Office environment. The session contained all buzz-technologies such as WPF, WCF and more. TQ was able to do a show where he was able to explain a scenario where you can benefit from all these technologies without losing focus on the things you want to solve.

If you are a registered TechEd attendee you are able to watch the repeat online:
https://www.mseventseurope.com/online/Registered/SessionDetail.aspx?sessionId=7267

The code for the presentation was published by Andrew Whitechapel and TQ is explaining some extra things at his blog:
http://blogs.msdn.com/tq/archive/2007/11/30/vsto-architecture-demo-from-teched-and-msdn-webcast.aspx

Check it out, and if you have a chance to go to the presentation with this title, or can watch it online don't skip it!