Amazon Elastic Container Service (Amazon ECS) is the AWS service you use to run Docker applications on a scalable cluster. In this how-to guide, you will learn how to run a Docker-enabled sample application on an Amazon ECS cluster behind a load balancer, test the sample application, and delete your resources to avoid charges. This guide uses AWS Fargate, which has a ~$0.004 (less than half of a US cent) cost per hour when using the 0.25 vCPU / 0.5 GB configuration.