What is load balancing?

• Load balancers are servers that forward internet traffic to multiple server (EC2 Instances) downstream.

Why use a load balancer?

• Spread load across multiple downstream instances.
• Expose a single point of access (DNS) to your application.
• Seamlessly handle failures of downstream instances.
• Do regular health checks to your instances.
• → If one of them is failing then the load balancer will not direct traffic to the instance, so we can hide the failure of an EC2 instance using a load balancer.
• Provide SSL termination (HTTPS) for your websites.
• High availability across zones.

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