Resumen: [EN] Over the past decade, European education initiatives have sought to promote collaboration between higher education institutions. This collaboration has been encouraged and facilitated by programmes such as Erasmus+ and the European University Alliances. Although institutional agreements and technology platforms facilitate inter-institutional cooperation, local constraints can hamper the success of collaborative projects. To improve the effectiveness of inter-university educational initiatives, this article proposes that teachers be given a central role once again. More specifically, based on observation of the contributions made to the Portfolio project (Erasmus+ K2, 2022-2024) by five teachers from different European universities, the aim is to reveal a posteriori how teachers play a key role in this type of initiative. This was done by analysing the way in which these teachers coordinated to meet the challenges at local and dislocal levels throughout the various phases of the project's implementation.
