What is DNS?

The domain name system/server (DNS) is an internet technology service that allows a domain name to be translated into an Internet Protocol address (IP). A domain name is a meaningful and easy-to-remember name that relates to an Internet address (IP).

DNS handles the mapping between host names, which we humans find convenient to use(like www.vidyamantra.com), and Internet addresses which computers understand for example 173.192.100.114