It includes cleaning buildings inside and out, such as floors, walls, windows, and furniture, using specialized tools and cleaners, which includes repairing faults in various systems such as electricity, plumbing, air conditioning, and equipment. It also includes preventive maintenance to keep equipment and infrastructure in good condition. It relates to the operation of vital systems of buildings, such as electricity, water, heating, air conditioning, and security systems on a daily basis to ensure efficient continuity of work.