A load balancer is a tool that helps boost the resiliency and performance of a website by routing front-end traffic to a number of backend servers. A load balancer directs incoming web traffic to one of the backend servers to spread out the load, thus improving performance. Should one of the backend servers be inaccessible, the load balancer will route traffic appropriately. Thus, a load balancer can improve the performance of a website but also serves as a failover redundancy option.
Below documents provide guidelines for deploying Azure/AWS load balancer for Aptify Web and e-Business.