The round robin algorithm distributes the load evenly across the available servers on a rotational basis. The first request is forwarded to the first server, the second to the next server in the list, and so on. When the end of the list is reached, the iteration starts again from the beginning. This is one of the simplest and most used load-balancing algorithms; however, it's not the only one. More sophisticated algorithms allow assigning priorities, selecting the least loaded server or the one with the fastest response time.
