Migration is complex and uncertain. To be effective, migration policies need to explicitly acknowledge these two defining features of contemporary mobility. This is especially crucial as migration remains a top policy priority area in Europe and worldwide, with many policy actions being proposed and implemented for different types of flows on the voluntary-forced migration continuum. The overarching aim of QuantMig is to produce comprehensive, multi-perspective and robust quantitative migration scenarios to support various areas of European migration policy, based on the cutting-edge developments in conceptualising, explaining, estimating and forecasting migration