DNS servers are essential components of the internet that help translate human-friendly domain names, like www.example.com, into numerical IP addresses, such as 192.0.2.1. This translation allows computers to locate and communicate with each other over the internet, making it possible for users to access websites easily. When you enter a website address in your browser, your device sends a request to a DNS server to find the corresponding IP address. Once the server responds with the correct address, your browser can connect to the desired website, enabling you to view its content quickly and efficiently.