Abstract The healthcare system willingly adopts new innovative means of communication and solutions offered by computer science. Telemedicine was one of the first terms used in this context. It was initially associated with providing medical services but quickly extended to other areas of health-related activities, including public health. The growth of the global web yielded new prospects for the provision of health services, also resulting in new terms to name the use of information and telecommunication technologies in healthcare. E-health, stemming from the end of 90ies in the 20th century, was initially defined as a new domain strongly associated with public health, especially in the context of access to health information. Quickly, its understanding was extended to all health-related interventions based on innovative digital technologies. Today, digital health and digital public health have emerged as the key terms, signifying the next phase of emerging applications that leverage the advancements made on the technical front. The medical community is probably more inclined to use the former term, while public health professionals are dedicated to the latter. But do these terms carry distinct meanings? Or is it merely a matter of the professional group’s background? Is the focus on individual or population health a differentiating factor? In the meantime, business and technical communities have developed the concept of Health 4.0. This concept emphasizes using technologies like the Internet of Things, cloud computing, big data, and artificial intelligence. However, digital (public) health benefits hugely from these solutions. One can ask whether every professional community needs other concepts and new terms for naming fields, resulting from the multidisciplinary effort. And where are the plain people in this landscape? Do they have sufficient digital and health literacies to accept new modes of health service delivery?