Explore how public sector organizations can build sovereign, secure, and cloud-native infrastructure using open source technologies in this 45-minute conference talk from the Linux Foundation. Learn from the Dutch government's practical experience in designing multi-tenant platforms across government data centers, with Michel Schildmeijer from SSC-ICT sharing proven patterns, governance models, and valuable lessons applicable to regulated environments worldwide. Discover how open source adoption increases transparency, reduces vendor lock-in, and modernizes service delivery while examining alignment strategies with European digital sovereignty and open standards policies that enable long-term resilience and innovation in government technology infrastructure.