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