If an application at the production site fails to run in a short period of time due to force majeure factors such as a fire or power outage in a data center or equipment failures such as a software or hardware failure, you can use the Elastic Compute Service (ECS) disaster recovery feature to back up the application across zones. This rectifies faults that occur in a single zone and meets the recovery point objective (RPO) and recovery time objective (RTO) goals of your business.