The article addresses the challenge of making well-grounded architectural decisions in the field of cybersecurity for critical infrastructure facilities under increasing threats, limited resources, and complex interdisciplinary system structures. Modern approaches to building protection systems are analyzed, including the Zero Trust Architecture concept, Explainable AI methods, and risk-based models applied for threat detection and response in highly critical environments. It is identified that existing solutions lack sufficient adaptability and fail to account for the set of interrelated criteria that influence the effectiveness of the protection system architecture. The aim of the research is to develop an integrated decision support system (DSS) that considers the multidimensional nature of cybersecurity tasks and enables the selection of optimal architectures taking into account technical, organizational, and economic factors. A multi-criteria approach based on AHP is proposed, complemented by a structural impact analysis module and a dynamic mechanism for updating criterion weights in accordance with evolving threats and risks. Evaluation criteria for protection architectures
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