Elastic Load Balancing (ELB) allows incoming traffic from the internet to be automatically distributed across multiple EC2 instances. Just like load balancers in the physical world, this allows us to have better redundancy and fault tolerance while reducing the per-server load. ELB comes in two flavors: application and network load balancing.
The application load balancer handles web traffic via HTTP and HTTPS; the network load balancer operates on a TCP level. If your application runs on HTTP or HTTPS, it is generally a good idea to go with the application load balancer. Otherwise, using the network load balancer is a good bet.
A detailed comparison of the application and network load balancer can be found at https://aws.amazon.com/elasticloadbalancing/details/ ...
