An SRV record is a DNS record, which is used to redirect a domain to a third-party server and use it for some service different from a 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 are able to specify an Internet Protocol which the domain address will use and the port, that will be employed to connect to the remote server. In addition, provided that you have many SRV records for the exact same service, you could set individual priorities and weights for each one of them, so that you can distribute the load between a number of machines. Such a record allows you to use the same domain or subdomains under it with different companies, so you could employ it for different purposes even if you are unable to get all the services from one provider.