GitOps, introduced by Weaveworks in 2017, is a methodology for managing Kubernetes resource configurations using Git, serving as the single source of truth for deployments. This approach enhances productivity by integrating Git operations into the management of Kubernetes resources, allowing for rollback via git revert and eliminating manual kubectl commands. GitOps tools are categorized into push-based and pull-based, with FluxCD and ArgoCD being examples of the latter, which periodically poll Git repositories to detect changes and apply them to Kubernetes clusters without needing Kubernetes API credentials. The integration of CircleCI for continuous integration (CI) and ArgoCD for continuous delivery (CD) facilitates constructing a comprehensive CI/CD pipeline, enabling automatic deployment of updates triggered by changes in Git. ArgoCD distinguishes itself with its GUI, which allows for configuration, status checks, and manual synchronization of Kubernetes deployments. In combination with CircleCI, which accelerates Docker builds using Docker Layer Caching and allows for automated image building and pushing, organizations can streamline their CI/CD processes, enhancing both speed and reliability in deploying high-quality Kubernetes applications.