A Building Automation System or BAS system is a technology that allows for the centralized control, monitoring, and management of a building's various systems, including HVAC, lighting, security, and more. BAS systems use sensors, controllers, and software to automate building asset controls and operations, optimize energy usage, and improve occupant comfort and safety. Building Automation Systems are essential for commercial buildings as they provide a more efficient and sustainable way of managing facility operations and asset controls.