An SRV record, which signifies Service record, is a DNS entry that is used to define the servers that run a particular service for a domain name. Quite simply, you’re able to use your domain name not just 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 site with it. Whenever you set up the SRV record, you can choose what IP it'll use, on which port the connection to the specific server will be established as well as the priority and the weight of the record provided that you have a number of SRV records for the very same service. The second option allows you to use different machines for load balancing and redundancy. With this kind of DNS records, you can use the same domain name for a number of purposes and even with different providers in case the same one is unable to provide all services you need.