An SRV record is a DNS record, that is used to direct a domain name to a third-party server and employ it for some service different from a site. This may 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 could specify an Internet Protocol which the domain address will use and the port, which is to be used to connect to the remote server. Moreover, provided that you have several SRV records for the same service, you'll be able to set various priorities and weights for each and every one of them, allowing you to spread the load between many machines. Such a record will enable you to employ the same domain name or subdomains under it with different companies, so you can employ it for different purposes even if you are unable to get all the services from one service provider.