An SRV record, which signifies Service record, is a DNS entry that is used to define the servers that run a specific service for a domain name. Quite simply, you’re able to use your domain name 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 instance, while you still have an Internet site with it. If you create the SRV record, you can pick what IP it'll employ, on which port the connection to the specific server is going to be established plus the priority and the weight of the record provided that there are several SRV records for the very same service. The second option will permit you to use different machines for load balancing and redundancy. With this type of DNS records, you can use the same domain name for a number of purposes and even with different companies in case the same one can't provide all services that you need.