Fundamental characteristics of the digitizing world are its increasing dynamics and complexity. While this development first had a game-changing impact on the private sector, the public sector is increasingly experiencing pressure to adopt easy to use, useful, and secure e-government solutions that provide convenient data access and interaction possibilities to public stakeholders. Therefore, the public sector needs to move away from traditional bureaucracy and move on to conducting business in a way that satisfies the needs and requirements of public stakeholders. For this reason, this textbook takes a public management and administration-oriented perspective to better understand the e-government concept and to provide helpful insights as well as strategic advice for successfully implementing and maintaining e-government systems.