E-government is an increasingly well-established and wide-ranging field, in which there has been an explosion of new technologies, applications, and data resulting in new challenges and opportunities for e-government research and practice. This Research Handbook advances research in the field of e-government by first recognizing its roots and documenting its growth and progress. It investigates the advent and implications of new technologies, and structures the content around core topics of service, management, engagement and access. Two additional sections examine the role of e-government in developing countries and smart cities.