An SRV record, which stands for Service record, is a DNS entry that is used to define the servers that run a particular service for a domain name. Put simply, you’ll be able to use your domain name not only for a site, but also for an instant messaging server, a video streaming host or perhaps a Voice-Over-IP server, for example, while you still have a site with it. Whenever you set up the SRV record, you may choose what IP it's going to use, on which port the connection to the particular server is going to be established along with the priority and the weight of the record in case that there are several SRV records for the very same service. The latter option will allow you to use different machines for load balancing and redundancy. Using this kind of DNS records, you can use the same domain address for a number of purposes and even with different providers in case the same one is unable to provide all services you require.