"Since the 1970's, organizations are spending more and more money building new information systems. The fast growing number of systems and in many cases the ad hoc manner in which the systems were integrated have exponentially increased the cost and complexity of information systems. At the same time organizations are finding it more and more difficult to keep these information systems in alignment with business need. Furthermore, the role of information systems has changed during the last two decades, from automation of routine administrative tasks to a strategic and competitive weapon. In light of this development, a new field of research and practice was born that soon came to be known as Enterprise Architecture."