Purchasing is a critical function within organizations that involves acquiring goods and services necessary for the operation of the business. It includes activities such as sourcing vendors, negotiating contracts, selecting suppliers, and managing supplier relationships. Purchasing is an essential part of supply chain management and plays a key role in ensuring the timely and cost-effective procurement of resources needed to produce goods and deliver services. Research in the field of purchasing focuses on strategies and best practices for optimizing procurement processes, reducing costs, improving supplier performance, and enhancing overall supply chain efficiency. This research area also explores trends in procurement technology, sustainability, and ethics in purchasing practices.