A retail company runs a business-critical web service on an Amazon Elastic Container Service (Amazon ECS) cluster that runs on Amazon EC2 instances. The web service receives POST requests from end…

A retail company runs a business-critical web service on an Amazon Elastic Container Service (Amazon ECS) cluster that runs on Amazon EC2 instances. The web service receives POST requests from end users and writes data to a MySQL database that runs on a separate EC2 instance. The company needs to ensure that data loss does not occur. The current code deployment process includes manual updates of the ECS service. During a recent deployment, end users encountered intermittent 502 Bad Gateway errors in response to valid web requests. The company wants to implement a reliable solution to prevent this issue from recurring. The company also wants to automate code deployments. The solution must be highly available and must optimize cost-effectiveness. Which combination of steps will meet these requirements? (Choose three.)