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