Argo CD is an open-source, declarative GitOps continuous delivery tool for Kubernetes. It enables teams to manage application deployments by syncing the desired state of Kubernetes resources, defined in Git repositories, with the actual cluster state. Argo CD provides a web UI, CLI, and API for visualizing and controlling deployments, making it easier to track changes, roll back updates, and enforce consistency across environments. It supports features such as automated synchronization, health checks, multi-cluster management, and role-based access control. By following GitOps principles, Argo CD improves reliability, auditability, and collaboration in Kubernetes workflows. Its simplicity, scalability, and integration with CI/CD pipelines have made it a popular choice for organizations adopting GitOps to streamline Kubernetes application delivery.