Affiliations: Department of Systems Engineering and Operations
Research, George Mason University, Fairfax, VA 22030-4444, USA
Abstract: Today, many organizations are concerned with how to successfully
transition to an organization utilizing information technology to its fullest
strategic extent. The organizations enterprise architecture plays a key
role in this transition. Enterprise architectures are typically comprised of
many components and can be very complex. All of these components must be
integrated well for the organization to easily evolve and successfully adapt to
the frequent technology and business changes that occur. An Enterprise
Architecture Framework (EAF) can significantly aid development of an adaptable
enterprise architecture. When developing an enterprise architecture, the major
areas of focus should be stakeholders perspectives, contextual
awareness interrogatives by which these perspectives are expressed, and System
of Systems (SOS) hierarchical levels. This research has led to the
identification of an enterprise architectural framework for a complex system of
systems. It identifies an enterprise architecture framework and an Architecture
Development Process (ADP) to engineer an effective, flexible enterprise
architecture. The resulting three-dimensional enterprise architecture framework
incorporates hierarchical levels of the system of systems that characterize the
enterprise as well as the perspectives of all stakeholders, including such
external ones as customers and partners, and contextual awareness
interrogatives. The resultant enterprise architecture framework explicitly
addresses the complexity of systems and the high degree of integration needed
across system of systems levels. Measures of effectiveness for the enterprise
architecture framework, architecture development process, and the resulting
architecture are briefly discussed as well as an empirical evaluation. The
results of the evaluation suggest that use of both the framework and the
architecture development process are beneficial.