Public Sector Open Source fishbowl: This interactive discussion will highlight different policy approaches for promoting the use of open source in government, both in Europe and beyond. In particular, it will be discussed how the European Commission is using the notion of Digital Commons more as a tool to focus policymaking and investment around open technologies, in comparison to the efforts of many other international organisations -- like the UN, World Bank, and others -- which are using the language of Digital Public Goods and using this to guide policy making and investment, particularly in the development and humanitarian sectors. The discussion will give some time to the question of public infrastructures based on open source and real world use cases for DPGs and Digital Commons in Europe. Significant space will be given to audience participation, allowing for questions from, and participation of, the audience. This discussion will include Nicholas Gate, Amreen Taneja and Bolaji Ayodeji.