An SRV record, which stands for Service record, is a DNS entry that is used to identify the servers that run a particular service for a domain. Basically, you are able to use your domain not just for a website, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, for instance, while you still have an Internet site with it. Whenever you set up the SRV record, you may choose what Internet Protocol it's going to use, on which port the connection to the particular server will be established plus the priority and the weight of the record provided that you have several SRV records for the exact same service. The latter option allows you to use different machines for load balancing and redundancy. With this type of DNS records, you can use the same domain address many different purposes and even with different providers if the same one cannot provide all services you need.