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