As urbanization continues to rise, high-rise buildings are increasingly constructed to optimize land use. However, thedesign of tall structures brings new challenges, especially in ensuring safety and stability under lateral loads fromearthquakes.Traditional lateral load resisting systems such as shear walls and braced frames may not provide sufficient rigidityintallerstructures. Outrigger and wall-belt systems have proven effective in enhancing the lateral stiffness and minimizing structural drift.This review compiles a comprehensive analysis of the optimal placement of a single outrigger and wall-belt support systemwithina 20-storey building model. By evaluating multiple structural cases using ETABS software under seismic Zone III conditions, thestudy highlights the impact of outrigger positioning on structural performance in terms of displacement, axial forces, baseshear,shear force, and bending moment. The paper emphasizes the third-floor level (OTS4) as the most efficient locationfor placingtheoutrigger-system. Keywords: High-rise building, Outrigger system, Wall-belt support, Seismic resistance, ETABS analysis, Lateral loadresponse