SRV, which is an abbreviation for Service, is a DNS record, which allows you to employ a domain name for a certain service different from a site. By creating a couple of SRV records, you’re able to use the domain name with different companies and direct it to several servers at once, each and every server managing a separate service. You could specify the port number for the connection to each and every machine, so there will not be any interference. You can also set different priorities and weight for two records that are used for the exact same service, but forward 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 specific software running on a number of machines with different companies. Which one a customer of yours will use depends on the priority and weight values that you've set.