The most basic of load balancing services is called round robin. Round robin is often compared to a rotor because it returns one endpoint at a time in a cyclical manner.
Let’s say you want to point your domain to three geographically distributed web servers: 188.8.131.52, 184.108.40.206, and 220.127.116.11 with round robin enabled. Each time your domain is queried, it will return the next IP in the list.
This kind of load balancing is configured using Record Pools. Pools are groups of endpoints, which are applied to DNS records. When the record is queried, it will rotate through the different endpoints in the pool at each request. We like to think of round robin pools as rotors.