Sustainability is on the agenda of every nation, every organisation, and many citizens today; it is a global movement that cannot be ignored. If we do nothing, unsustainable global trends will impact businesses over the next twenty years, as well as governments and civil society organisations. These trends range from climate change to ecosystem decline, from energy insecurity to water scarcity. They affect resource management, poverty, economic justice, food security, demographic change, population growth, and more. Those who are confronted with sustainability challenges notice another global trend: solutions cannot be found in isolation. Collaboration among different actors is paramount; it is also the sole route to successfully addressing the challenges we face.