- ELB is an AWS service that automatically distributes incoming network or application traffic to a number of EC2 instances.
- It monitors the health of each of the EC2 instances associated with it and forwards traffic only to healthy instances.
- ELB provides a single point of contact for the EC2 instances behind ELB.
- Each of the EC2 instances is marked with a status: either InService if it is healthy, or OutOfService if it is unhealthy.
- ELB only routes traffic to InService instances.
- ELB helps to provide high availability, scalability, elasticity, fault tolerance, and security to your application workloads running on EC2 instances.
- There are three types of load balancers supported by AWS ELB—Classic Load Balancer, Network Load Balancer, and Application Load Balancer.
- ELB stops sending requests to instances that are either unhealthy or are deregistering from ELB when...
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