• Open System Architecture for Computer Integrated Manufacturing (CIM) and related information systems emphasize openness, modular interfaces, and formal frameworks to support evolution and enterprise integration [3] [19] [7] [13] [20].

• Architectural theory and design cognition examine how designers reason about structure, computation, and constraints, integrating concepts from the Logic of Architecture (design, computation, and cognition) and styling of descriptions; this frames software architecture as a cognitive activity [17] [12] [6] [9] [11].

• Concurrency/parallel and AI-integrated architectures explore parallel hardware and collaborative problem solving, using models such as the Pixel Machine (a parallel image computer), concurrent system simulation (SARA), and the blackboard model for problem solving to organize computation [2] [5] [15] [9].

• Information systems architecture frameworks and modeling emphasize taxonomy, information modeling, and structured descriptions to guide system design and integration, highlighting Zachman-based framing and formal ISA extensions [7] [14] [13] [12] [20].

• Data-architecture and database-system design focus on extensible data models and active database features, illustrated by POSTGRES architecture (object-relational expansion, triggers) and broader information-architecture methods [4] [14].