ABM Industries is a facility services company that manages buildings and infrastructure for large institutions and corporations. At its core, ABM provides janitorial and cleaning services, building engineering, parking management, and electrical and mechanical infrastructure work. Customers include commercial office landlords, airlines, airports, manufacturers, school districts, and data centers — organizations that outsource essential but non-core facility work. ABM is organized into five segments: Business & Industry (janitorial, engineering, and parking for offices and venues), Manufacturing & Distribution (integrated services for factories, warehouses, and data centers), Aviation (airport and airline services including passenger assistance and cabin cleaning, serving 27 of the 30 busiest U.S. airports), Education (custodial and facilities services for K-12 and universities), and Technical Solutions (electrical and mechanical infrastructure, microgrids, EV charging, and data center power). ABM is fundamentally a labor business, with direct labor representing roughly 68% of revenue. ABM earns a markup over labor, supervision, and overhead costs, with profitability driven by contract pricing mix, labor efficiency, and business mix. Technical Solutions carries higher margins than janitorial work and is ABM's primary growth focus — microgrids and data center infrastructure have grown at double-digit rates, driven by demand for energy resilience and AI-related data center expansion. ABM is also pushing deeper into semiconductor fabrication facilities, an environment it views as largely unoutsourced. Recent acquisitions include RavenVolt (microgrids), Quality Uptime (data center UPS), and the planned acquisition of WGNSTAR (semiconductor fab services).