The Argo CD CLI is a powerful tool for managing Kubernetes applications. It enables users to control their Argo CD instance from the terminal, ensuring streamlined integration with development workflows. The CLI provides various features such as creating and managing applications, synchronizing Git repositories with live cluster state, and performing operations like login, app creation, sync, and status checks. It also allows users to authenticate with multiple Argo instances using a single config file and switch between contexts to work efficiently with different environments. Key commands include `argocd app create`, `argocd app sync`, `argocd app rollback`, `argocd app logs`, and `argocd proj`. The CLI also supports GitOps, allowing users to manage applications using Kubernetes custom resources, an API, a web interface, and a CLI. Additionally, Argo CD projects group multiple applications together, enabling safe cross-team access management. Spacelift is another IaC management platform that uses GitOps to automate CI/CD for infrastructure components, offering features such as policies, stack dependencies, self-service infrastructure, creature comforts, drift detection, and remediation.