Book excerpt: This book explores the effectiveness of governance networks on the design and implementation of sustainability strategies. European cities are actively developing sustainability strategies to address the impact of climate change. One recent approach many cities have taken is the creation of ‘governance networks’: groups of public, private and third sector organisations, which collaborate to support urban sustainability efforts. Drawing on two case studies in Glasgow and Copenhagen, this book explores the concept of governance networks in theory and practice, revealing how stakeholder collaboration, leadership and innovation within these networks can help or hinder the process. It also highlights the many benefits of these networks, including increased participation in the decision-making process, increased levels of resources and expertise on sustainability issues, as well as stakeholder buy-in for sustainability policies. This book provides recommendations for improving the efficiency of governance networks and will be of interest to academics and practitioners working in the areas of urban governance and sustainability.