An SRV record, which is short for Service record, is a DNS entry employed to define the servers that run a particular service for a domain. Basically, you can use your Internet domain not only for a site, but also for an instant messaging server, a video streaming host or perhaps a Voice-Over-IP server, for instance, while you still have a website with it. Whenever you create the SRV record, you can select what IP it'll employ, on which port the connection to the particular server is going to be established in addition to the priority and the weight of the record provided that you have several SRV records for the very same service. The latter option will permit you to use different machines for load balancing and redundancy. With this type of DNS records, you could use the same domain many different purposes and even with different providers in case the same one can't provide all services that you need.