Even though the underlying infrastructure appears healthy, Beanstalk is able to detect if the application isn’t responding on the custom link. It then logs the situation as an environmental event, which can then be checked in detail and thus, acted upon.
AWS Elastic Beanstalk apps have a built-in system for avoiding underlying infrastructure failures. The Beanstalk uses the Auto Scaling feature to automatically launch a new instance in case an Amazon EC2 instance fails.
