An SRV record is a DNS record, that 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 so forth. When an SRV record is created, you can specify an Internet Protocol the domain will use and the port, which will be employed to connect to the remote server. Moreover, in case you have many SRV records for the same service, you'll be able to set individual priorities and weights for each and every one of them, so you can spread the load between a number of machines. Such a record will enable you to use the same domain or subdomains under it with different companies, so you're able to employ it for different purposes even if you cannot get all the services from one provider.