A Building Management System (BMS) or Building Automation System (BAS) is a computer-based system that monitors and controls the mechanical, electrical, and other systems in a building. The system is typically connected to a variety of sensors and actuators that are used to measure and control the environment in the building. This includes temperature, humidity, air quality, lighting, and security. The BMS also allows for remote monitoring and control of the building systems, making it possible to adjust settings and monitor performance from a remote location. The BMS is designed to maximize efficiency, reduce energy costs, and provide a comfortable environment for occupants. It can also be used to provide data for predictive maintenance and other analytics. The BMS is an important part of any building’s overall energy management system and is becoming increasingly important as energy costs continue to rise.