An SRV record, which signifies Service record, is a DNS entry employed to outline the servers which run a certain service for a domain. Put simply, you’ll be able to use your Internet domain not only for a site, but also for an instant messaging server, a video streaming host or 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 as well as the priority and the weight of the record in case that you have several SRV records for the very same service. The second option will allow you to use different machines for load balancing and redundancy. With this type of DNS records, you can use the same domain address for a number of purposes and even with different companies in case the same one cannot provide all services you require.