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