An SRV record, which means Service record, is a DNS entry which is used to define the servers that run a particular service for a domain. Put simply, you can use your domain not just for an Internet site, but also for an instant messaging server, a video streaming host or perhaps a Voice-Over-IP server, for instance, while you still have an Internet site with it. If you create the SRV record, you can select what IP it's going to employ, on which port the connection to the particular server will be established in addition to the priority and the weight of the record assuming that you have several SRV records for the exact same service. The second option will enable you to use different machines for load balancing and redundancy. Using this kind of DNS records, you may use the same domain address for a number of purposes and even with different companies in case the same one is not able to provide all services that you need.