You are probably aware that Amazon Web Services provides Elastic Load Balancing (ELB) as their preferred load balancing solution on the AWS platform. ELB distributes incoming application traffic across multiple Amazon EC2 instances in the AWS Cloud. Considering the costs involved, and the expertise required to set up your own load balancer solution, ELB can be a very attractive option for rapid deployment of your application stack.

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https://www.sumologic.com/blog/devops/aws-elastic-load-balancer-best-practices/