SRV, which is an abbreviation for Service, is a DNS record, which enables you to employ a domain for a particular service different from an Internet site. By creating a few SRV records, you’re able to use the domain with different companies and forward it to a number of servers simultaneously, every single server managing a different service. You can specify the port number for the connection to every machine, so there will not be any interference. You may as well set different priorities and weight for 2 records that are used for the exact same service, but point to different servers for redundancy or load balancing. By having an SRV record you can employ your domain or a subdomain under it for a Voice-Over-IP server, for example, and have the real software running on various machines with different providers. Which one a customer of yours will use is determined by the priority and weight values that you have set.