An SRV record, which is short for Service record, is a DNS entry that is used to outline the servers that run a particular service for a domain. Quite simply, you’re able to use your domain not only for a 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 select what Internet Protocol it'll use, on which port the connection to the specific server will be established in addition to the priority and the weight of the record assuming that you have several SRV records for the very same service. The second option will enable you to employ different machines for load balancing and redundancy. Using this kind of DNS records, you may use the same domain many different purposes and even with different companies in case the same one cannot provide all services you require.