ENSTA Paris is a public Graduate School of Science and Engineering and a founding member of the Institut Polytechnique de Paris. The significant number of its international partnerships (82 partner universities, 32 double degree agreements in America, Africa, Asia and Europe) and the cultural diversity of its students (28% international students of 30 different nationalities) show the international dimension of our school. This international dimension is also visible through the ENSTA Paris programme of excellence that includes compulsory international outgoing mobility, which has been increased from 12 to a minimum of 18 weeks between September 2020 and September 2022. The aim of this Erasmus+ project was therefore to support as many students as possible during their mobility, in order to provide them with the financial resources they needed for their international career, and thus help to strengthen their international, technical and intercultural skills. The project supported 80 mobilities, including 30 mobilities for studies and 50 mobilities for traineeships, in the context of a health crisis that did not favour long periods abroad.