Rob Boucher talks about a very helpful (and free!) application architecture guide contributed to by the who's who in the .NET Community, both inside and outside of Microsoft. You'll pick up some great tips. Writers: J.D. Meier (Project Lead), Alex Homer, David Hill, Jason Taylor, Prashant Bansode, Lonnie Wall, Rob Boucher Jr., Akshay Bogawat, Praveen Rangarajan (Test), and Dennis Rea (Edit).