An SRV record, which stands for Service record, is a DNS entry that is used to outline the servers which run a certain service for a domain name. In other words, you can use your Internet domain not just for a website, but also for an instant messaging server, a video streaming host or a Voice-Over-IP server, as an example, while you still have a website 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 specific server is going to be established plus the priority and the weight of the record provided that you have a number of SRV records for the very same service. The second option allows you to use different machines for load balancing and redundancy. Using this type of DNS records, you could use the same domain name for a number of purposes and even with different providers in case the same one is not able to provide all services you need.