This 3-hour technical workshop explores how sovereign cloud platforms can be built and operated using OSISM, OpenStack, Ceph, and Kubernetes. Participants will learn about reference architectures, automation concepts, lifecycle management, non-disruptive upgrades, and day-2 operational best practices. Through architecture deep-dives and live demonstrations, attendees will gain practical insights into deploying, scaling, securing, monitoring, and maintaining production-grade sovereign cloud environments. The session is aimed at cloud architects, platform engineers, and OpenStack operators looking to understand how modern open-source technologies can be combined to deliver automated and resilient sovereign cloud infrastructures.