Explore Swisscom's transformative journey from traditional spreadsheet-based operations to a cloud-native "Everything as Code" approach in this 27-minute conference talk. Discover how leveraging new technologies and open-source tools enabled the company to revolutionize its 5G Core development and operations. Learn about the implementation of GitOps methodologies, DevOps best practices, and the adoption of version control and CI/CD/CT for both infrastructure and applications. Gain insights into the challenges faced and the strategies employed, including advanced templating practices and repository/branching strategies. Understand how these innovations facilitated automation at scale and streamlined the instantiation, configuration, testing, and lifecycle management of 5G core services. Witness a demonstration of deploying, configuring, and testing 5G network functions on Kubernetes using Flux, Ansible, and templating techniques.