An SRV record, which stands for Service record, is a DNS entry employed to outline the servers which run a certain service for a domain name. Basically, you can use your Internet domain not only for a site, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for example, while you still have an Internet site with it. Whenever you set up the SRV record, you can select what Internet Protocol it will use, on which port the connection to the particular server will be established plus the priority and the weight of the record in case that there are several SRV records for the very same service. The latter option allows you to employ different machines for load balancing and redundancy. With this kind of DNS records, you can use the same domain name for various purposes and even with different companies in case the same one cannot provide all services you need.