An SRV record, which means Service record, is a DNS entry that is used to identify the servers which run a particular service for a domain name. Quite simply, you will be able to use your domain not only for an Internet site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, as an example, while you still have a site with it. Whenever you create the SRV record, you may choose what Internet Protocol it'll employ, on which port the connection to the particular server will be established along with the priority and the weight of the record in case that you have several SRV records for the exact same service. The second option allows you to use different machines for load balancing and redundancy. With this kind of DNS records, you may use the same domain name for a variety of purposes and even with different companies in case the same one is unable to provide all services you need.