Nowadays the economic world is characterized by a dynamic environment that make the enterprise aware of the increasing production, and consequently competition, in each sector. In order to survive in this uncertain context where the competition become more and more aggressive, the management of the purchases in company and, implicitly, the relationship between company and suppliers assumes a critical role. The strategic role of procurement, intended as not only the pure purchasing process but everything involved in the relationship with suppliers, is fundamental to increase the "value proposition" that the company delivers to its customers and the impact of the firm in the market.