ABSTRACT
This chapter examines the challenges faced in applying architectural designs to an enterprise network environment and considers the risk management in enterprise architecture planning. Enterprise architects must consider complexity issues not only in technology selection, but also in terms of the number of resource silos and the level of undesirable redundancy present in any enterprise that has not been reengineered from whole cloth. An enterprise architect must identify which elements of the information architecture act as currency within the organization’s operational envelope, in order to plan and negotiate for sufficient resources to identify, acquire, manage, and use information and needed information technologies. An illustration of enterprise defensive concepts has much in common with early physical defenses employed to protect against invading armies. Enterprise architects must plan for reactive immediate-term solutions, address trends and evolving requirements, while moving always toward the supportable future-state enterprise that is yet to exist.
