The objective of any company manager is to develop his production system. He will constantly seek to minimize the risks of the company, optimize the stocks, reduce the cost of products, reduce the deadlines, have a social stability... And to achieve all these objectives, the company manager must have a good management system. Management is the whole of the techniques of organization of resources which are implemented for the administration of an entity, of which the art to direct men, in order to obtain a satisfactory performance. With a view to optimization, it tends to respect the interests and representations of the company's stakeholders. In order to take into account the differences in time, risk and information on management decision-making, it is customary to distinguish between: - Corporate management, which consists of giving a manager all the tools necessary to make the company successful; - Strategic management, which concerns the management of the market through strategy; - Organizational management, which consists of giving a leader all the necessary weapons to organize his entity.