SRV, which is an abbreviation for Service, is a DNS record, which enables you to use a domain name for a particular service different from an Internet site. By setting up a number of SRV records, you’ll be able to use the domain with different companies and direct it to a number of servers at a time, each and every server handling a different service. You are able to specify the port number for the connection to each machine, so there will never be any interference. You could also set individual priorities and weight for two records that are used for the very same service, but direct to different servers for redundancy or load balancing. Using an SRV record you can use 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 client of yours will use will depend on the priority and weight values that you have set.