The 2021 Danube Ports Day was successfully organised in the frame of the DIONYSUS project by the teams of Pro Danube Management and the Port Authority Vukovar, with the support of the Danube Ports Network.The event brought together more than 70 experts from the Danube Region and beyond, interested in topics related to (i) the potential of inland ports in urban mobility, (ii) fleet electrification as well as (iii) sustainable port logistics solutions.