Management, commerce or the economy are transversal sectors which allow access to very diverse professions in companies or administrations: accountant, marketing manager, business manager … Professions which all require rigorous and know how to communicate either within the company or externally. The sectors of activity in which they are practiced are also varied (services, industries, administrations, etc.) and the training courses leading to them – most often at bac + 5 level – are numerous.