An SRV record, which stands for Service record, is a DNS entry employed to outline the servers that run a certain service for a domain. Basically, you’ll be able to use your domain name not just for a web site, but also for an instant messaging server, a video streaming host or even a Voice-Over-IP server, for example, while you still have a site with it. Whenever you set up the SRV record, you can pick what Internet Protocol it'll use, on which port the connection to the particular server will be established as well as the priority and the weight of the record provided that you have a number of SRV records for the very same service. The second option will allow you to employ different machines for load balancing and redundancy. With this kind of DNS records, you can use the same domain many different purposes and even with different providers if the same one can't provide all services you require.