Ecctis was commissioned by the International Baccalaureate to undertake a critical and in-depth research study to explore current thinking and to identify existing practices and trends in the micro-credentials space. Through literature and document reviews the report explores models of micro-credentials, as well as associated practices in quality assurance, accreditation, recognition, portability, stackability, referencing and cataloguing. The report also provides a contextual overview of comparable providers working in the education space and recommendations for alignment with wider trends and identified good practices.