The Universite Catholique de l'Ouest is a multidisciplinary institution with 9 campuses in the West of France as well as the French overseas departments, UCO offers over 100 undergraduate and postgraduate programs to 10500 students. With a real territorial anchor and an international network of partners, UCO allows all students to benefit from a stimulating multicultural environment. Aware that the world is changing, it is necessary to be confronted with new ideas, ways of doing, seeing and thinking, inviting us to open up. The UCO therefore affirms its desire to internationalize in the different campuses that make it up. The mobility of students and staff is also there to illustrate this international openness. We see every day the impact of student mobility on their employability and their openness to positions abroad. We also see the impact of teaching mobility on the development of new programs and the internationalization of our existing training courses. The expertise acquired through the Erasmus + program in student and staff exchanges has also allowed us to expand our international activities, in particular by participating in strategic projects BIP and COIL.