This chapter describes the development by Unite! (University Network for Innovation, Technology and Engineering), an alliance of seven European universities, of a new multiple Co-tutelle model for joint doctoral education. The chapter discusses what a Co-tutelle means, the Unite! model and how it was created, different student and faculty experiences, the new multiple Co-tutelle framework, and its individual annexes and foundational principles. Features that prohibit and promote this kind of multiple Co-tutelle model are reflected on, along with lessons learned.