This document provides an overview of the OpenU project, which aims to create a European online and blended learning platform to facilitate cooperation between higher education institutions. The 3-year, €2.6 million project involves 21 partners across 10 European countries and will focus on developing educational cooperation, increasing student and staff mobility, and challenge-based learning. It will establish a single online access point for students and provide resources to support digital pedagogy and curriculum development. The project consists of 6 work packages and 4 clusters that will experiment with the online hub's functionalities to support inter-university cooperation.