An SRV record is a DNS record, which is used to redirect a domain name to a third-party server and employ it for some service different from a website. This may be a Voice-Over-IP server, a video streaming service, an instant messaging system, and so on. When an SRV record is created, you could specify an Internet Protocol that the domain address will use and the port, that will be used to connect to the remote server. Furthermore, provided that you have a few SRV records for the very same service, you could set various priorities and weights for every single one of them, so you can spread the load between several machines. Such a record will permit you to use the same domain or subdomains under it with different companies, so you're able to use it for different purposes even if you cannot get all the services from one service provider.