An SRV record, which stands for Service record, is a DNS entry that is used to define the servers that run a certain service for a domain. In other words, you are able to use your domain not only for an Internet site, but also for an instant messaging server, a video streaming host or even a Voice-Over-IP server, for example, while you still have a site with it. Whenever you create the SRV record, you can select what IP it'll 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 provided that there are several SRV records for the exact same service. The latter option allows you to use different machines for load balancing and redundancy. Using this kind of DNS records, you could use the same domain name many different purposes and even with different providers in case the same one cannot provide all services you require.