The AWS Command Line Interface (AWS CLI) is an open-source tool that allows you to interact with AWS services through command-line commands in your terminal or command prompt. With just a few configuration steps, the AWS CLI empowers you to execute commands that provide the same functionality as the AWS Management Console, which is accessible through a web browser. You can use the AWS CLI in various terminal environments, including Linux shells and the Windows command line. This tool provides a flexible and scriptable way to manage AWS resources and services directly from your command-line interface.