A Building Automation System (BAS), also known as a Building Management System (BMS), serves as the nerve center of modern buildings, orchestrating and optimizing a plethora of systems to enhance operational efficiency, occupant comfort, and safety. At its core, a BAS integrates various subsystems such as HVAC, lighting, security, and energy management into a centralized platform, enabling real-time monitoring, control, and automation. Through sensors, actuators, and sophisticated algorithms, it continuously collects data on environmental conditions, occupancy patterns, and energy usage, allowing for intelligent decision-making and proactive adjustments to optimize building performance. From regulating indoor temperatures and lighting levels to managing access control and fire detection, a well-designed BAS streamlines operations, reduces energy consumption, and ensures compliance with regulations. Moreover, its remote accessibility and analytics capabilities empower facility managers to remotely monitor and fine-tune building operations, fostering sustainability and resilience in today's built environment.