An SRV record, which means Service record, is a DNS entry which is used to define the servers that run a certain service for a domain name. Put simply, you will be able to use your domain name not only for a website, but also for an instant messaging server, a video streaming host or even a Voice-Over-IP server, for instance, while you still have a website with it. Whenever you set up the SRV record, you can pick what IP it will employ, on which port the connection to the specific server will be established along with the priority and the weight of the record assuming that you have a number of SRV records for the very same service. The latter option will enable you to employ different machines for load balancing and redundancy. With this type of DNS records, you may use the same domain many different purposes and even with different providers in case the same one is not able to provide all services you require.