DNS (Domain Name System) is a fundamental component of the internet that acts as a directory for translating human-readable domain names into IP addresses. In simpler terms, it is like a phonebook for the internet, allowing users to access websites and other online services by typing in a familiar domain name instead of a string of numbers. DNS works behind the scenes to seamlessly connect users to the correct website, making the internet more user-friendly and efficient. Without DNS, navigating the vast network of the internet would be a daunting and confusing task.