SRV, which is an abbreviation for Service, is a DNS record, which enables you to use a domain name for a specific service different from an Internet site. By setting up a couple of SRV records, you’re able to use the domain name with different providers and direct it to numerous servers at the same time, each server handling a different service. You'll be able to specify the port number for the connection to each and every machine, so there will not be any interference. You may as well set different priorities and weight for two records which are employed for the same service, but direct to different servers for redundancy or load balancing. With an SRV record you can employ your domain or a subdomain under it for a Voice-Over-IP server, for instance, and have the actual software running on various machines with different companies. Which one a client of yours will use will depend on the priority and weight values which you have set.