Circular sourcing means buying goods or services that contribute to closed energy and material cycles within supply chains, minimising, and in the best case avoiding, negative environmental impacts and waste creation throughout their life cycle. When accompanying a company to manage its supply chain and set circularity targets in this area, we always work on three levels: system (what contractual tools a company has at its disposal), suppliers (how can I make my suppliers include circularity in their systems and processes) and product (what materials and components underpin the products purchased). In the supply chain lie most of a company’s impacts and, consequently, the greatest potential for development.