An SRV record, which signifies Service record, is a DNS entry which is used to identify the servers that run a particular service for a domain. Put simply, you are able to use your domain name not just 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 an Internet site with it. When you create the SRV record, you can pick what Internet Protocol it'll use, on which port the connection to the particular server will be established along with the priority and the weight of the record in case that you have a number of SRV records for the very same service. The latter option allows you to employ different machines for load balancing and redundancy. Using this kind of DNS records, you could use the same domain address for a variety of purposes and even with different companies in case the same one is unable to provide all services you require.