Gartner divides ITAD services into three high-level categories: 1) Core disposition services: A menu of services that are core to all end-to-end ITAD processes and that must be evaluated on a make-or-buy decision scale 2) Secondary hardware services: The acquisition of used or secondary equipment from ITAD providers and their partners 3) Ancillary life cycle services: Services offered by full-service ITAD providers in addition to most of the core disposition and hardware services