An SRV record, which signifies Service record, is a DNS entry employed to define the servers which run a particular service for a domain. Put simply, you are able to use your domain name not only for a web site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for example, while you still have a site with it. If you create the SRV record, you can pick what Internet Protocol it'll use, on which port the connection to the specific server is going to be established in addition to the priority and the weight of the record in case that you have a number of SRV records for the exact same service. The second option will permit you to employ different machines for load balancing and redundancy. With this type of DNS records, you can use the same domain address for a variety of purposes and even with different companies in case the same one is unable to provide all services you require.