In business, facility management (or facilities management) is the management of builings, physical plant and services. The services are sometimes considered to be divided into "hard services" and "soft services." Hard services includes such things as ensuring that a building's air conditioning is operating efficiently, reliably, safely and legally. Soft services includes such things as ensuring that the building is cleaned properly and regularly or monitoring the performance of contractors (e.g. builders, electricians). The term "facility management" is similar to "property management" but often applied only to larger and/or commercial properties where the management and operation is more complex. Some or all of these aspects can be maintained by data-rich computer programs.