An SRV record, which signifies Service record, is a DNS entry which is used to identify the servers which run a specific service for a domain name. In other words, you can use your domain not only for an Internet site, but also for an instant messaging server, a video streaming host or even a Voice-Over-IP server, for instance, while you still have a website with it. When you set up the SRV record, you can select what Internet Protocol it is going to use, on which port the connection to the particular server will be established as well as the priority and the weight of the record in case that you have several SRV records for the exact same service. The second option will enable you to use different machines for load balancing and redundancy. With this type of DNS records, you could use the same domain name for various purposes and even with different providers in case the same one is not able to provide all services you need.