An SRV record is a DNS record, which is used to direct a domain name to a third-party server and use it for some service different from a website. This could 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 will use and the port, which will be employed to connect to the remote server. Moreover, provided that you have several SRV records for the very same service, you are able to set different priorities and weights for every single one of them, so you're able to send out the load between a number of machines. Such a record allows you to employ the same domain or subdomains under it with different providers, so you could use it for many purposes even if you can't get all of the services from a single service provider.