Outsourcing changes are usually linked to developments in the computer industry. In the past, mainframe operations have been the dominant way in which a company runs its information technology (IT). So consequently, outsourcing has drifted towards farming out entire computer centers. With more decentralized operations, such as LANs and WANs, the possibilities of selective outsourcing has become reality, opening the door to multiple vendors and the outsourcing of different environments. This leads to the question of whether to choose best-in-class providers or single integrators.