The Amazon ECS Command Line Interface (CLI) is a command line tool for Amazon Elastic Container Service (Amazon ECS) that provides high-level commands to simplify creating, updating, and monitoring clusters and tasks from a local development environment. The Amazon ECS CLI supports Docker Compose, a popular open-source tool for defining and running multi-container applications. Use the CLI as part of your everyday development and testing cycle as an alternative to the AWS Management Console or the AWS CLI.