The University of Warsaw, founded in 1816, is the largest university in Poland and one of the leading academic institutions in the country, ranked among the top three percent of universities worldwide. Since its inception, the University of Warsaw has played a key role in the intellectual, cultural, economic, and political life of Poland. The university actively participates in various European Union educational programs, including Erasmus+, since 1998. The purpose of joining the project was to support the educational mobility of students and staff at the University of Warsaw by offering students, doctoral candidates, and other university employees, opportunities to study or gain professional experience in program countries. The project aimed to develop the personal, academic, and professional competencies of participants and to strengthen European integration and international cooperation. In the case of student mobility, the main objectives of the project included: • improving academic performance through acquiring knowledge and experience in an international environment; • increasing employability through the development of professional and intercultural competencies; • fostering independence, self-reliance, and self-confidence among participants; • enhancing foreign language skills; • broadening intercultural awareness and understanding of other educational systems; • developing knowledge of European Union projects and European values, including integration and inter-university cooperation. To achieve these goals, the project planned a total of 1,330 mobility activities: 980 student mobility for studying, 105 student mobility for internships, 159 staff mobility for teaching activities, and 86 staff mobility for training. The project also aimed to enhance the quality of services provided to participants, improve mobility management procedures, and promote the University of Warsaw and Poland internationally. The implementation of the project contributed to the internationalization of the University of Warsaw, increased its competitiveness, strengthened strategic partnerships with foreign universities, and reinforced the university’s position as an open, innovative institution actively engaged in the exchange of educational experiences at the European and international level.