An SRV record is a DNS record, that is used to direct a domain to a third-party server and use 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 which the domain name will use and the port, which will be employed to connect to the remote server. In addition, in case you have a few SRV records for the very same service, you can set various priorities and weights for every one of them, so you're able to send out the load between a number of 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 various purposes even if you are not able to get all services from just one provider.