The MOWG has a goal of defining and tackling multiple challenges of the health ecosystems participating countries, including Serbia. Nataša Jovanović Lješković, the Dean of Faculty of Pharmacy from the University of Novi Sad and Pavle Zelić from the Medicines and Medical Devices Agency of Serbia, both represent Health Tech Lab and health tech ecosystem of Serbia in this international collaboration. First project and topic is Polypharmacy, the concurrent use of multiple medications by patient, defined as the most common challenge in all participating ecosystems. This is first of few topics and videos. Future topics and videos will cover the following topics: transitions of care, therapy adherence and systems of care/digital prescribing. Stay tuned!