The Domain Name System (DNS) is essential for improving the usability, scalability, accessibility, and efficiency of the internet. DNS serves as a mechanism for more than merely converting domain names into IP addresses; it resolves the challenge of mapping human-readable domain names to machine-readable IP addresses, making it easier for users to access websites without remembering complex numerical addresses. DNS supports the scalability of the internet by distributing domain record management across multiple servers, ensuring that it can handle the growing number of connected devices.