An SRV record is a DNS record, that is used to point a domain name to a third-party server and use it for a service different from a site. This can be a Voice-Over-IP server, a video streaming service, an instant messaging system, and many others. When an SRV record is created, you could specify an Internet Protocol which the domain address will use and the port, which will be employed to connect to the remote server. Also, provided that you have many SRV records for the very same service, you can set individual priorities and weights for every one of them, so that you can send out the load between many machines. Such a record will enable you to employ the same domain or subdomains under it with different companies, so you can use it for different purposes even if you are not able to get all services from a single provider.