An SRV record is a DNS record, that is used to point a domain to a third-party server and employ 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, etc. When an SRV record is created, you are able to specify an Internet Protocol which the domain name will use and the port, which is to be employed to connect to the remote server. Also, if you have a few SRV records for the same service, you'll be able to set individual priorities and weights for every single one of them, so you can spread the load between many machines. Such a record allows you to use the same domain or subdomains under it with different providers, so you can employ it for different purposes even if you can't get all of the services from just one service provider.