This article analyzes approaches to modeling real situations in modern information systems, their theoretical foundations, and practical applications. The research covers objective-functional, simulation, agent-based, and hybrid modeling methods. The article examines the advantages and limitations of various modeling technologies, as well as their application in the processes of designing and optimizing information systems. Based on empirical research, ways to increase the effectiveness of modeling real situations are proposed. The results show that the hybrid approach is the most optimal solution for modeling complex information systems.