Balancing data sovereignty with AI access is a critical challenge. Join Stadtwerke Norderstedt and synvert to explore our 4-year journey scaling from a handful of GPUs to a multi-cluster Kubernetes architecture. We will share how moving workloads off the cloud enabled a secure AI ecosystem with on-prem Chat, RAG, and agentic workflows. Attendees will learn to build sovereign AI that users love, gaining insights into adoption metrics, performance benchmarks, and hard-learned pitfalls.