An SRV record, which is short for Service record, is a DNS entry that is used to define the servers which run a certain service for a domain. Put simply, you’ll be able to use your domain not only for a site, 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. When you set up the SRV record, you can choose what Internet Protocol it is going to use, on which port the connection to the specific server will be established plus the priority and the weight of the record provided that there are several SRV records for the exact same service. The second option will allow you to employ different machines for load balancing and redundancy. With this type of DNS records, you can use the same domain for a variety of purposes and even with different companies if the same one can't provide all services you require.