Invasive alien species (IAS) have become a major driver of biodiversity loss, second only to habitat fragmentation in recent decade. Europe is particularly affected by alien species, which are invading the continent an unprecedented pace. Their impact means that many of the region's rarest endemic species are on the brink of extinction and that our well-being and economies are affected. Establishing an early warning and rapid response framework for Europe become a key target. The present publication is the EEA contribution to achieving this goal.