ABM Industries Incorporated is a provider of integrated facility solutions. The Company operates through five segments: Janitorial, Facility Services, Parking, Building & Energy Solutions, and other. Its Janitorial segment provides a range of cleaning services for commercial office buildings, data centers, educational institutions, government buildings, health facilities, industrial buildings, retail stores, sport event facilities and transportation hubs. Its Facility Services segment provides onsite mechanical engineering and technical services and solutions relating to a range of facilities and infrastructure systems. Its Parking segment provides parking and transportation services. Its Building & Energy Solutions segment provides energy solutions; electrical; heating, ventilation and air conditioning; lighting, and other general maintenance and repair services for clients. Its other segment provides facility solutions to airlines and airports.