This paper describes the importance of technology within the corporate governance of companies, representing two main domains in enterprise architecture: business architecture and IT architecture, helping to bridge the gap between the two main domains. IT Architecture is considered as a key domain in corporative governance, giving the adequate support to business architecture that helps to improve business. Due to evolution in markets of products and services, and technological changes, as well as the strong impact of technology on all areas of business, it is necessary to clearly distinguish the importance of the IT architecture domain, as well as focus attention on the different areas related to the technology domain. © 2012 WIT Press.