An SRV record, which stands for Service record, is a DNS entry that is used to define the servers which run a specific service for a domain name. Quite simply, you are able to use your domain not just for an Internet 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. Whenever you create the SRV record, you can choose what Internet Protocol it'll use, on which port the connection to the specific server will be established as well as the priority and the weight of the record assuming that you have a number of SRV records for the exact same service. The latter option will enable you to employ different machines for load balancing and redundancy. Using this kind of DNS records, you can use the same domain name for a number of purposes and even with different companies in case the same one can't provide all services you require.