ECIU University is an innovative educational project on a European level. It is open to students, scientists and society across national borders to work together on solutions to relevant societal challenges. The key element is the learner-centered learning format “Challenge-Based Learning” (CBL). The focus of teaching/learning opportunities in ECIU University is on addressing the United Nations Sustainable Development Goals. Collaboration in the cross-university, interdisciplinary and intercultural teams is supported by the online-platform(engage.eciu.eu/).