Pandemics and wars have woken up countries and companies to the strategic vulnerabilities in their infrastructure dependencies, with digital sovereignty now being a top concern, especially in Europe. In this short talk, Thierry Carrez, the General Manager for the Open Infrastructure Foundation, will explore the critical role that open source has to play in general in enabling digital sovereignty. In particular, he will explore how Open Infrastructure (open source solutions for providing infrastructure), with its interoperability, transparency and independence properties, is essential to to reach data and computing sovereignty.