Domain Name System — the system that translates human-readable domain names into server IP addresses.
DNS (Domain Name System) is the internet's phone book. It translates human-readable Domain names (like google.com) into IP addresses (like 142.250.80.46) that computers use to find each other. Every time you visit a URL, DNS resolves the domain to a Server address.
DNS records include A records (domain to IP), CNAME records (domain aliases), MX records (email), and more. When you deploy a website, you configure DNS to point your domain to your Hosting provider. CDNs use DNS for global routing. SSL certificates are tied to domain names resolved by DNS.
DNS is configured through DNS Records — individual entries like A records (mapping domains to IP addresses) and CNAME records (mapping subdomains to other domains).
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