An SRV record, which signifies Service record, is a DNS entry that is used to identify the servers that run a specific service for a domain name. In other words, you are able to use your Internet domain not only for a web site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for instance, while you still have a website with it. Whenever you set up the SRV record, you can choose what IP it's going to employ, on which port the connection to the specific server will be established plus the priority and the weight of the record assuming that you have a number of SRV records for the exact same service. The second option will allow you to employ different machines for load balancing and redundancy. Using this type of DNS records, you could use the same domain many different purposes and even with different companies if the same one cannot provide all services you require.