An SRV record, which is short for Service record, is a DNS entry employed to define the servers which run a specific service for a domain. Put simply, you can use your domain name not only for a website, 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 pick what IP it'll use, on which port the connection to the particular server is going to be established as well as the priority and the weight of the record in case that you have a number of SRV records for the very same service. The second option will permit you to employ different machines for load balancing and redundancy. Using this type of DNS records, you may use the same domain many different purposes and even with different companies if the same one is not able to provide all services that you need.