Abstract
Modeling of complex systems is based on established theories and concepts, but also on innovative constructions that harmonize the system with the requirements foreseen for its operating life. The problems of system interaction are concentrated at each coupling interface between them, where the harmonization of inputs and outputs of matter, energy and information, the management of coupling variables, the mutual compatibility of systems, the harmonization of error handling procedures, data processing protocols and reliability are achieved. The refinement of current and future systems, especially in the context of advanced integration of artificial intelligence and the human factor, requires new approaches, theories and tools of mutual interaction, involving even the quantum level of human consciousness and awareness. The inter-, trans- and multi-disciplinary characteristics of system coupling interfaces must be considered, covering a wide range of phenomena, from deterministic to probabilistic, even to quantum subtleties. Therefore, interface management must become a strategic solution in the optimal functioning of networked systems.