An SRV record is a DNS record, which is used to forward a domain to a third-party server and employ it for a service different from a site. This may be a Voice-Over-IP server, a video streaming service, an instant messaging system, etc. When an SRV record is set up, you could specify an Internet Protocol that the domain will use and the port, which will be employed to connect to the remote server. In addition, in case you have many SRV records for the same service, you'll be able to set individual priorities and weights for every single one of them, in order to spread the load between many machines. Such a record allows you to employ the same domain name or subdomains under it with different companies, so you could employ it for different purposes even if you are not able to get all the services from one provider.