École Polytechnique has established strong partnerships and strategic relationships with the world’s leading academic institutions. L’X is a member, along with Science Po Paris and the University of Paris 1 Panthéon-Sorbonne, of the Alliance Program with Columbia University. The partnership aims to develop collaborative education and research initiatives. It facilitates regular exchanges of researchers and students between institutions, and provides mobility grants. International multidisciplinary research teams have been set up as part of the partnership, as well as innovative double-degree and summer school programs. The Alliance Program serves as a hub in the fields of high-energy and renewable energy physics. Another major collaboration is the EuroTech Universities Alliance, of which École Polytechnique has been a member since 2018. This network brings together l’X, the Technical University of Denmark, École Polytechnique Fédérale de Lausanne, the Technical University of Eindhoven and the Technical University of Munich. Through collaborations between these major universities of science and technology, the EuroTech Universities Alliance aims to develop solutions to the major challenges facing society.