An SRV record is a DNS record, that is used to point 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 set up, you could specify an Internet Protocol the domain will use and the port, which will be employed to connect to the remote server. Furthermore, if you have a few SRV records for the same service, you'll be able to set various priorities and weights for every one of them, so you can distribute the load between a number of machines. Such a record will allow you to use the same domain or subdomains under it with different companies, so you could employ it for many purposes even if you are not able to get all services from a single service provider.