>The architecture of a .NET application is different than the traditional 3-tier system you are talking about. See http://msdn.microsoft.com/architecture/journal/
>

Could you expand on that statement? From this link, http://msdn.microsoft.com/architecture/journal/default.aspx?pull=/library/en-us/dnmaj/html/aj1metadat.asp, it suggests that the meta-data approach using .Net can be equated to the discussion going on here.

Where specifically are the major differences? Clearly,(IMO,<s>), it's the direction that Whidbey is headed right?