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 website. This could be a Voice-Over-IP server, a video streaming service, an instant messaging system, etc. When an SRV record is set up, you are able to specify an Internet Protocol which the domain name will use and the port, that will be used to connect to the remote server. Additionally, provided that you have a few SRV records for the exact same service, you could set various priorities and weights for each one of them, so you can distribute the load between several machines. Such a record will permit you to use the same domain name or subdomains under it with different providers, so you could employ it for various purposes even if you cannot get all the services from one provider.