In the second semester of 2019/2020, during the months of lockdown, the Politecnico di Milano immediately took action to guarantee the continuity of teaching activities on-line, carrying out a profound internal reorganization that could cope with the new scenario. Furthermore, through its laboratories and its skills, it has contributed to the fight against the epidemic. We are now ready to return to our campuses, in complete safety. This page collects all the documents and information useful for the academic year 2021/2022.