The internationalization and institutional modernization strategy of the University Paris-Saclay (UPSaclay) relies significantly on its participation in the Erasmus+ program. UPSaclay places internationalization at the core of its governance and strives to incorporate the guidelines of the Erasmus+ program for 2021/27 and its new priorities (inclusion and diversity, digital transformation, combating climate change, participation in democratic life). For UPSaclay, Erasmus+ serves as a crucial tool to contribute to the European space of education and training. It facilitates the establishment of international partnerships and strengthens the internationalization of its 48,000 students and 16,000 staff members. Through mobility activities, participants develop essential skills for their academic and professional journeys, including academic, technical, linguistic, and soft skills.