An SRV record is a DNS record, that is used to direct a domain name to a third-party server and use it for a service different from a web site. This can be a Voice-Over-IP server, a video streaming service, an instant messaging system, and many others. When an SRV record is created, you can specify an Internet Protocol which the domain address will use and the port, which will be used to connect to the remote server. Furthermore, in case you have many SRV records for the very same service, you can set individual priorities and weights for each and every one of them, so you're able to send out the load between several machines. Such a record will permit you to employ the same domain or subdomains under it with different providers, so you could employ it for many purposes even if you can't get all of the services from just one provider.