AWS Certified Cloud Practitioner

The AWS Documentation mentions the following: A load balancer distributes incoming application traffic across multiple EC2 instances in multiple Availability Zones. This increases the fault tolerance of your applications. Elastic Load Balancing detects unhealthy instances and routes traffic only to healthy instances.

For more on the Elastic Load Balancer service, go to URL: https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/introduction.html