Hanneke Kip works as an assistant professor at the Centre for eHealth and Wellbeing Research of the University of Twente and as a researcher at Transfore - a forensic psychiatric organization in the Netherlands.

Nienke Beerlage-de Jong is an assistant professor at the section of Health Technology and Services Research at TechMed Centre of the University of Twente, the Netherlands.

Lisette (J.E.W.C.) van Gemert-Pijnen is a full professor of persuasive health technology at the University of Twente, the Netherlands.

Robbert Sanderman is emeritus professor and previously full professor and head of Health Psychology group at the Faculty of Medicine at the University Medical Centre Groningen.

Saskia M. Kelders is an associate professor of engaging eHealth technologies at the Department of Psychology, Health and Technology at the University of Twente, Enschede, the Netherlands.

Part 1 Underpinnings Of eHealth. Chapter 1. Introducing eHealth Lisette van Gemert-Pijnen, Hanneke Kip, Saskia Kelders, Robbert Sanderman & Nienke Beerlage-de Jong. Chapter 2. Psychological Principles and Health Behaviour Change Jane Walsh, Eimear Morrissey Rory Coyne & Leona Ryan. Chapter 3. Opportunities of Technology to Promote Health and Wellbeing Saskia Kelders. Chapter 4. Healthcare and Digital Transformation Laura Kooij & Wim van Harten. Chapter 5. Mental Health and eHealth Technology Jacob Pitkow & Stephen Schueller. Chapter 6. Public Health, Behavioural Medicine, and eHealth Technology Rik Crutzen, Rosalie van der Vaart, Andrea Evers, and Christina Bode. Part 2 eHealth Development, Implementation and Evaluation. Chapter 7. The CeHRes Roadmap Hanneke Kip, Nienke Beerlage-de Jong, Saskia Kelders & Lisette van Gemert-Pijnen. Chapter 8. The Contextual Inquiry Hanneke Kip, Nienke Beerlage-de Jong, & Jobke Wentzel. Chapter 9. Activities for Value Sensitive eHealth Design Lex van Velsen & Christiane Grünloh. Chapter 10. Business Modelling Bart Nieuwenhuis. Chapter 11. Human-Centred Design Tessa Dekkers & Catherine Burns. Chapter 12. Persuasive Health Technology Nienke Beerlage-de Jong, Lisette van Gemert-Pijnen, Harri Oinas-Kukkonen & Saskia Kelders. Chapter 13. Innovation, Improvement and Implementation - Conceptual Frameworks for Thinking through Complex Change Chrysanthi Papoutsi & Trish Greenhalgh. Chapter 14. Sustainable eHealth Implementation: A Practical Perspective Marcel Pieterse, Annemarie Braakman-Jansen, Roberto Cruz Martinez & Lisette van Gemert-Pijnen. Chapter 15. Engagement Saskia Kelders & Olga Perski. Chapter 16. Evaluating eHealth Hanneke Kip, Saskia Kelders, Iris ten Klooster, Julia Keizer, Lisa Klein Haneveld & Tessa Dekkers. Key Terms.