The purchasing department is responsible not only for the acquisition of goods and services needed by the enterprise. Specialists in this area build long-term partnerships, attract innovation, manage risks and are responsible for the image and good name of the organization. Eduard Trymbovetsky, a professional negotiator and purchasing consultant, wrote a fundamental work on the role of the purchasing department in the company’s activities, its functions and modern challenges. The author argues that for a long time purchasing was undervalued, but now the supply department is the key business structure of the company. Effectively organized procurement allows you to optimize costs, improve product quality, ensure safe supplies and continuity of the production process. In his book, Eduard Trymbovetsky examines all aspects of a buyer’s work: stages of the procurement process and strategy formation, optimization of costs and supplies, organization of direct and indirect, government and commercial procurement.