The article "What Is eHealth (3): A Systematic Review of Published Definitions" by Hans Oh, Carlos Rizo, Murray Enkin, and Alejandro Jadad, published in the Journal of Medical Internet Research, aims to systematically review and analyze published definitions of eHealth. The term eHealth, which encompasses the use of information and communication technologies in healthcare, has become widely used despite lacking a universally accepted definition. The authors conducted a comprehensive search across various databases and online sources, identifying 51 unique definitions. These definitions were analyzed for content, emerging themes, patterns, and novel ideas. The analysis revealed two universal themes (health and technology) and six less general themes (commerce, activities, stakeholders, outcomes, place, and perspectives). The definitions consistently emphasized the positive impact of eHealth on healthcare processes and outcomes, with a focus on improving efficiency, accessibility, and cost-effectiveness. The authors conclude that while there is no single, definitive definition of eHealth, the compilation of these definitions can enhance understanding and communication among stakeholders.The article "What Is eHealth (3): A Systematic Review of Published Definitions" by Hans Oh, Carlos Rizo, Murray Enkin, and Alejandro Jadad, published in the Journal of Medical Internet Research, aims to systematically review and analyze published definitions of eHealth. The term eHealth, which encompasses the use of information and communication technologies in healthcare, has become widely used despite lacking a universally accepted definition. The authors conducted a comprehensive search across various databases and online sources, identifying 51 unique definitions. These definitions were analyzed for content, emerging themes, patterns, and novel ideas. The analysis revealed two universal themes (health and technology) and six less general themes (commerce, activities, stakeholders, outcomes, place, and perspectives). The definitions consistently emphasized the positive impact of eHealth on healthcare processes and outcomes, with a focus on improving efficiency, accessibility, and cost-effectiveness. The authors conclude that while there is no single, definitive definition of eHealth, the compilation of these definitions can enhance understanding and communication among stakeholders.