Explore a case study on GitOps-based cloud native 5G Core lifecycle management, focusing on Mavenir's 5G SA platform implementation at Deutsche Telekom Technik. Learn about the evolution of telco systems, 5GC protocol stacks, and the introduction of cloud native mindset in telecommunications. Discover the components of Das Schiff platform, the concept of "Rolling Train," and the high-level GitOps concept. Examine the benefits of this approach to the ecosystem and the challenges faced during implementation. Gain insights into CICD infrastructure, GitOps-based configuration management for 5G applications, requirements for supporting infrastructure rolling upgrades, and ideas for implementing in-service software upgrades without traffic migration.