Outsourcing: it’s an approach which consisting in to handle a part of the activities which were previously taken on the march by the company. The outsourcing indicates the decision taken by a company to resort to an outside provider, often in a long-term perspective, to have made everything or a part of one or several functions (integrated or integrable functions at the time of the choice).

  It is a medium-term strategic approach for the company which chooses to:

· To focus on the mains activities

· Mobilize its resources on the tasks which it masters.

·  Delegate to specialists non-strategic functions.

It is about obtaining, in equal cost otherwise lesser:

· A better quality of service of externalized function.

. Technologies and skills out of reach of the company.