The book "Information, Models, and Sustainability" offers a comprehensive analysis of current trends and challenges in sustainability policy, taking into account the role of information technology. It is aimed at professionals from research and practice and highlights the growing importance of sustainability for governments, civil society, and the economy worldwide. In light of pressing issues such as water scarcity, extreme weather events, and social inequality, the necessity for political measures to promote sustainable alternatives becomes evident. The book discusses how public investments and regulatory mechanisms can contribute to the creation of markets for sustainable products and the role of policy informatics in this process.