Johnson Controls International plc, together with its subsidiaries, engages in engineering, manufacturing, commissioning, and retrofitting building products and systems in the United States, Europe, the Asia Pacific, and internationally. It operates through four segments: Building Solutions North America, Building Solutions EMEA/LA, Building Solutions Asia Pacific, and Global Products. The company designs, sells, installs, and services heating, ventilating, air conditioning, controls, building management, refrigeration, integrated electronic security, integrated fire detection and suppression systems, and fire protection and security products. It also provides energy efficiency solutions and technical services, including inspection, scheduled maintenance, and repair and replacement of mechanical and control systems, as well as data-driven smart building solutions.