An SRV record is a DNS record, which is used to point a domain 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 can specify an Internet Protocol which the domain will use and the port, which is to be used to connect to the remote server. Moreover, in case you have numerous SRV records for the very same service, you'll be able to set individual priorities and weights for every single one of them, so that you can distribute the load between many machines. Such a record will permit you to employ the same domain or subdomains under it with different providers, so you're able to use it for different purposes even if you are unable to get all services from a single service provider.