The efficient vertical transportation of people and goods within tall buildings requires reliable elevator systems. Two primary elevator technologies used in commercial installations are hydraulic and traction elevators. While they both move cabs vertically through hoistways, their mechanisms differ substantially. Choosing the proper elevator type has major impacts on installation costs, maintenance requirements, and overall building design. This article will explore the key differences between hydraulic and traction elevator drive systems, hoistway configurations, suitable building applications for each, and factors to consider when selecting which elevator installation method best fits a project's unique parameters.