Decision-Making in Industry 4.0: A Layered Framework for Converting Cyber-Physical Information into Governed Action

Industry 4.0 has significantly expanded the amount, speed, and granularity of information available to modern industrial organizations, but richer information does not automatically produce better or more effective decisions. The fundamental practical problem is to systematically convert cyber-physical observations into accountable actions under conditions of uncertainty, strict operational constraints, and necessary human governance. To address this gap, this paper develops a comprehensive conceptual framework for Industry 4.0 decision-making that seamlessly connects sensing, state representation, prediction, optimization, authorization, execution, and continuous learning. The proposed framework is organized around three core claims. First, industrial decision-making should be treated as a dynamic, closed-loop process rather than a static, one-way analytics pipeline. Second, decision models must be carefully aligned with the specific time horizon, observability, uncertainty, and reversibility of the action being selected. Third, reliability-oriented applications-such as inspection, maintenance, inventory control, mission abort, and system reconfiguration-serve as highly useful integration cases because they clearly expose the critical connection between physical degradation, cyber representation, prescriptive optimization, and governed execution. Ultimately, the paper contributes a novel layered architecture, a horizon-based model alignment table, and a robust closed-loop decision cycle that can be utilized to organize future academic research and practical implementation. The resulting perspective shifts critical attention away from isolated technological solutions and toward the holistic quality of the complete decision loop, ensuring the system observes relevant states, represents uncertainty properly, recommends feasible actions, assigns authority clearly, and learns effectively from realized outcomes.