What is Windows DNA architecture?
The Windows Distributed internet Applications Architecture (DNA) is a Microsoft blueprint for scalable, robust, & distributed business software. The Windows DNA has evolved over time and was not preplanned. It provides all the combined merits of the Centralized mainframe, internet technologies, application servers and Personal computers. The Windows DNA is an evolution which is started from the mainframes (where all logic was centralized), VB6 / SQL SERVER (three tier where we talked in terms of having one more tier which was mostly COM where business logic resided), Fox pro ages (where we talked in terms of two tier systems), COM+ (looking in terms of the transactions & fulfilling ACID rules) and finally the DNA.
Figure :-Windows DNA sections