This presentation is given by Stefano Pampaloni at the RIOS Open Source Week, Nov. 2022 in Roma. Abstract: Established in 2007 as a non-profit organisation, OW2 is an independent community dedicated to promoting open source software for information systems and fostering their business ecosystems. OW2 federates 50+ organizations and 2500+ IT professionals worldwide. OW2 hosts 50+ technology Projects. RIOS is an Italian network of companies established in 2015 aiming to improve open source adoption and to build sustainable businesses around it OW2 and RIOS are working together to foster collaboration between European open-source stakeholders.