Outsourcing is not just a method of gaining a one-time cost advantage, but an effective strategy for gaining and maintaining competitive advantages when executed as part of an overall sourcing strategy. These days, hundreds nor thousands of companies use outsourcing services to some degree, much of it involving the technology sector. IT outsourcing services involve sub-contracting or “farming out” certain information technology functions to independent companies, individuals or individuals of third parties, rather than taking care of those functions at home.