Companies play a pivotal role in the green transition. They must transform business models, develop purpose-driven strategies, and innovate products to meet customer and regulatory demands. This book of case studies offers strategic insights and best-practice examples from the Nordic region, showcasing leading companies in sustainability. It evaluates businesses based on the Climate Nexus framework, covering Energy Transition, Sustainable Transport, Sustainable Agriculture, Healthy Diet, and Circular Economy. Featured cases from outside the Nordic region are also included, including cases on the Municipality of Amsterdam and Stanford Sustainability Utilities & Infrastructure. Drawing on a network within the Nordic Circular Hotspot, this collection provides actionable strategies and supports the growing knowledge of the transition to a green and circular economy. Whether you're an executive seeking to transform your business or a student exploring green transition opportunities, this book is an essential guide to achieving a sustainable future.