This comprehensive open access book gives an overview of the core issues in digital public health, with a strong emphasis on prevention, population health, and health systems. It covers a broad spectrum of topics, ranging from theoretical frameworks to legal and ethical issues related to digital public health applications and interventions. With chapters on user-centered technology development, evaluation, participatory approaches in digital public health, and global digital public perspectives, it also presents examples taken from ten essential public health operations. Targeted at researchers in academia, industry, and government, this unique text offers a broad insight into digitalization, a central topic in the current development of public health worldwide.