Description:
Before the development of .NET, COM and DNA technologies were used for application development on Microsoft platforms. COM is Microsoft’s framework for developing and supporting program component objects. DNA is a framework that integrates Web applications with the n-tier model of development. It is used to develop cost-effective solutions that can meet the demands of the Internet, intranet, global e-commerce, and corporate computing.
http://blogs.seedinfotech.com/technologies-prior-net/