An SRV record, which means Service record, is a DNS entry which is used to outline the servers that run a particular service for a domain. In other words, you’ll be able to use your domain not only for a site, but also for an instant messaging server, a video streaming host or even a Voice-Over-IP server, for example, while you still have a site with it. If you set up the SRV record, you may choose what IP it's going to employ, on which port the connection to the particular server will be established as well as the priority and the weight of the record provided that you have several SRV records for the very same service. The second option will enable you to use different machines for load balancing and redundancy. With this kind of DNS records, you can use the same domain for a variety of purposes and even with different providers in case the same one is unable to provide all services you need.