SRV, which is an abbreviation for Service, is a DNS record, which enables you to employ a domain
for a particular service different from a site. By creating a few SRV records, you can use the domain address with different providers and direct it to numerous servers at a time, each and every server managing a different service. You are able to specify the port number for the connection to every single machine, so there won't be any interference. You can also set individual priorities and weight for two records that are employed 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 real software running on a number of machines with different providers. Which one a client of yours will use is determined by the priority and weight values that you've set.