Part I: Concept and Strategy of Digital Government.- 1. Introduction.- 2. The Information Society and Digital Government.- 3. The Concept and Strategy of Digital Government.- 4. Digital Transformation and Digital Organization.- Part II: Technology, Smart City and Digital Government Models.- 5. Digital Government Technology.- 6. Artificial Intelligence, Big Data, Cloud Computing, and Internet of Things.- 7. Social Media and Public Disinformation.- 8. Smart City.- 9. Digital Government Business Models.- Part III: Digital Government Services, Channels and Implementation.- 10. User-Driven Digital Government.- 11. Digital Government Services.- 12. Multichannel E-Service Delivery.- 13. Success Factors of Digital Government.- 14. Digital Government Implementation.- Part IV: Digital Government Cases and Outlook.- 15. Digital Government Case Studies.- 16. Digital Government Outlook.