An SRV record, which signifies Service record, is a DNS entry which is used to define the servers which run a specific service for a domain. Basically, you are able to use your domain name not only for an Internet site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for example, while you still have a website with it. If you create the SRV record, you may choose what IP it'll use, on which port the connection to the specific server will be established plus the priority and the weight of the record provided that you have a number of SRV records for the very same service. The latter option will enable you to use different machines for load balancing and redundancy. Using this kind of DNS records, you could use the same domain name many different purposes and even with different providers in case the same one cannot provide all services you require.