Amazon EC2 Container Registry (Amazon ECR) is a managed AWS Docker registry service. Customers can use the familiar Docker CLI to push, pull, and manage images. Amazon ECR provides a secure, scalable, and reliable registry. Amazon ECR supports private Docker repositories with resource-based permissions using AWS IAM so that specific users or Amazon EC2 instances can access repositories and images. Developers can use the Docker CLI to author and manage images. The service client's operations are safe to be used concurrently. It is not safe to mutate any of the client's properties though.