From Wikipedia: "Enterprise architecture is the practice of applying a comprehensive and rigorous method for describing a current and/or future structure and behavior for an organization's processes, information systems, personnel and organizational sub-units, so that they align with the organization's core goals and strategic direction. Although often associated strictly with information technology, it relates more broadly to the practice of business optimization in that it addresses business architecture, performance management, organizational structure, and process architecture as well."

Thus, the notion has morphed from something that's been more of a technology concept to a management concept, if you're using this definition. I've blogged about that issue several times. Indeed I think the government is driving some of this, thus expanding the definition and reach of the notion of enterprise architecture.