SRV, which is an abbreviation for Service, is a DNS record, which permits you to employ a domain for a particular service different from an Internet site. By creating a number of SRV records, you will be able to use the domain name with different providers and direct it to numerous servers at once, every single server handling a separate service. You are able to specify the port number for the connection to every single machine, so there will not be any interference. You can even set individual priorities and weight for two records which are used for the exact same service, but forward 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 actual software running on several machines with different companies. Which one a customer of yours will use depends on the priority and weight values which you have set.