Book excerpt: Global consumption of raw materials currently goes beyond the earth's regenerative capacity, but the circular economy offers a more sustainable model which also provides new business opportunities. Mastering the Circular Economy is an introduction to circularity from a business and value chain management perspective. With many reflections and exercises throughout, the book draws a direct link between relevant recent theory and practice and offers students and practitioners a deeper understanding of the topic. It looks at both the macro and micro context of the circular economy, from the government and societal view to the impact of new business models in an individual company. Starting from the corporate imperative of moving from linear to circular business models, Mastering the Circular Economy covers the associated opportunities and challenges for organizations, from regulation and risk to value chain collaboration, reverse logistics and product quality. Part two of the book helps students to pull together everything they've learned and see how the concepts play out in the real world by guiding them through application in the online business simulation game The Blue Connection (free basic access is included with the book). Readers are continuously asked to reflect on the choices they would make in different roles to demonstrate a full understanding of the strategic and operational implications of the circular economy.