What DNS Is
DNS (Domain Name System) translates domain names like 'example.com' into IP addresses that computers understand. Cloudflare DNS is one of the fastest in the world, with an average response time of <10ms globally.
DNS is like a giant phone book. You type the name (example.com), DNS finds the number (192.0.2.1). Without DNS, you'd have to memorize IPs for every site. Cloudflare keeps that phone book in 330+ locations worldwide.