Enterprise entrusts business and functional part or all of the respective company, to the vendor or outside the subsidiary company and the like. Including the staff, the to subsidiary company it converts the section of specification, business sale (when continuation) it points to the thing which is done there is business trust.

Until recently, there was many a thing which is used the business such as development, use and the maintenance which relate to the information system as the terminology which says the external trader and that it entrusts to the serial subsidiary company, but recently other than outside order conversion of the indirect business such as accounting and the general affairs and personal affairs, it includes the external trust of the product design and development, production and physical distribution business, etc. calls the out-sorcing generally it has become the sea urchin.

In English original sense, the out-sorcing, only operation as for those which to the partner the committee are entrusted the out tasking (outtasking) with calls those which owe everything to management liquidation responsibility extensively from the business design in regard to the business when order enterprise side has kept the strategy and control. There are also times when the language, out-sorcing in the wide sense that these both parties were included is used.

The original strategic out-sorcingin order is limited to concentratethe management resource which to the field which the propulsion - - namely the respective company of core ?????? management makes proud, during business process means the fact that positively the external resource is adopted, "" reduction "of expediting plant investment burden" the guaranty "business reform of variable expense conversion" soft business process "of utilization" fixed cost "of the resource outside altitude" and so on becomes purpose. Such out-sorcing the set manufacturer of electronics industry separates production section, EMS (the electronics manufacturing service) the case which utilizes the enterprise is typical example.

The out-sorcing of information system-related business (the out tasking) to in regard, "in" the guaranty development business and the like of technical power ", there was many a thing where retention" risk evasion "of the scalability" and so on makes purpose, but the case which recently is done "reduction as" company-wide restructuring part of "of information orientation investment" is conspicuous. But "the strategy there is no easy out-sorcing which pays attention to only the cost aspect, to become outside order", there isa risk whereoptimum IT ????? is lost. Of the company-wide optimum is thought in regard to IT business, the business which is done at the respective company and the business which is entrusted outside are carved appropriately, it becomes important to select the out source which corresponds as a "business partner".

The resource which is supplied, SE and the programmer, other than human ones such as the conservative necessary personnel,the softwareresource like ASP, the hardware resource such as datacenter serviceand utility computing, meanders such as network below, and security service is located the out-sorcing in regard to these supplies. In addition recently, the overseas out-sorcing which exceeding the border, supplies these resources (offshore outsourcing) attention has focused.