The Kubernetes Command-Line Tool, commonly known as kubectl, is a powerful interface for managing Kubernetes clusters. It allows users to deploy applications, inspect and manage cluster resources, and view logs. With simple commands, users can interact with their Kubernetes environment, making it easier to automate tasks and streamline workflows. Kubectl supports various operations, such as creating, updating, and deleting resources like pods, services, and deployments. It also provides options for scaling applications and rolling out updates. By using kubectl, developers and system administrators can efficiently control their Kubernetes infrastructure from the command line.