Explore the journey from traditional sys-ops to GitOps in this conference talk by Gonzalo Izquierdo and Manuel Hernandez. Discover how Spanish Ministries transformed their legacy ecosystem into a Kubernetes-based environment using Argo CD. Learn about the implementation of rolling updates, canary deployments, and blue-green deployments with customizations. Gain insights into the transition process, including source code management, CI/CD pipelines, and team interactions. Delve into templating techniques for Kubernetes using Argo App deployment, Kustomize, and Helm. Understand how core services are deployed with Argo and how applications are bootstrapped on clusters. Explore topics such as resource management, environment security, and monitoring with Prometheus. Conclude by examining the results and benefits of adopting a GitOps model in a government setting.