An SRV record, which signifies Service record, is a DNS entry employed to identify the servers which run a particular service for a domain name. Basically, you can use your domain not only for a website, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, as an example, while you still have a website with it. Whenever you create the SRV record, you can choose what Internet Protocol it's going to employ, on which port the connection to the specific server is going to be established in addition to 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 enable you to employ different machines for load balancing and redundancy. Using this kind of DNS records, you can use the same domain for a number of purposes and even with different providers in case the same one can't provide all services you need.