An SRV record is a DNS record, that is used to forward a domain to a third-party server and use it for some service different from an Internet site. This can be a Voice-Over-IP server, a video streaming service, an instant messaging system, etc. When an SRV record is set up, 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. Furthermore, provided that you have numerous SRV records for the same service, you are able to set individual priorities and weights for every single one of them, so that you can spread the load between several machines. Such a record will enable you to employ the same domain name or subdomains under it with different companies, so you could use it for different purposes even if you can't get all services from just one provider.