SRV, which is an abbreviation for Service, is a DNS record, which permits you to employ a domain for a certain service different from an Internet site. By creating a couple of SRV records, you’re able to use the domain with different providers and point it to many servers at once, each and every 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 can also set individual priorities and weight for 2 records which are used for the same service, but forward to different servers for redundancy or load balancing. With an SRV record you can employ your domain address or a subdomain under it for a Voice-Over-IP server, for example, and have the specific software running on several machines with different providers. Which one a customer of yours is going to use will depend on the priority and weight values that you have set.