Balancer & Gateway
Load balancing refers to efficiently distributing incoming network traffic across a group of backend servers, also known as a server farm or server pool. A gateway is a node (router) in a computer network, a key stopping point for data on its way to or from other networks. Thanks to gateways, we are able to communicate and send data back and forth. The Internet wouldn’t be any use to us without gateways (as well as a lot of other hardware and software).