DNS stands for Domain Name System, which is a fundamental part of the internet's infrastructure. It translates human-friendly domain names (like www.example.com) into IPv4 addresses (like or IPv6 addresses (like 2001:db8:85a3::8a2e:370:7334) that computers use to identify each other on the network. Here's a breakdown of how it works and its key components:

DNS is critical for the functionality of the internet, enabling the use of memorable domain names instead of requiring users to remember numerical IP addresses.