PreNUDGE: A Platform Ecosystem for Digital Prevention.

Non-communicable diseases remain the leading cause of morbidity and mortality across Europe, yet preventive efforts are often fragmented and underutilized. In Austria, high life expectancy contrasts with relatively few healthy life years, underscoring the need for innovative prevention strategies. The PreNUDGE project aims to build a qualified and interoperable platform ecosystem for prevention that integrates health apps, structured data, and behavioral nudges. The platform design follows principles of platform ecosystems, interoperability standards such as HL7 FHIR, and public health insights from nudging theory. Initial results include the integration of four qualified prevention apps addressing diabetes, mental health, COPD, and colon cancer, as well as the development of governance processes for app qualification and data use. PreNUDGE demonstrates the potential of digital ecosystems to connect citizen-generated data with healthcare and research, supporting evidence-based prevention, secondary use of health data, and a shift toward preventive care in Austria.