An SRV record, which stands for Service record, is a DNS entry which is used to define the servers that run a specific service for a domain name. 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 perhaps a Voice-Over-IP server, for instance, while you still have a website with it. Whenever you set up the SRV record, you can select what Internet Protocol 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 provided that you have several SRV records for the exact same service. The latter option will allow you to use different machines for load balancing and redundancy. With this type of DNS records, you may use the same domain name for a number of purposes and even with different companies in case the same one is unable to provide all services that you need.