Systems Engineering and Management Definitions

Acquirer: a party, commonly an organizational entity, that acquires an item from a supplier. (PPI)

Architectural Design Review (ADR): a review-based design verification activity that seeks to establish whether the proposed system architecture at the first physical level of solution elements, is both capable of meeting the system requirements and is the best of any alternatives in doing so. (PPI)

Architecture: the conceptual structure and overall logical organization of a system from the point of view of its design. (after OED)

Architecture Framework: defines how to organize the structure and views associated with an Architecture.