"DNS, or Domain Name System, is responsible for translating human-readable domain names (such as zdnet.com) to machine-readable IP addresses (such as 199.232.194.154). Without DNS, you'd have to memorize IP addresses instead of domain names. I don't know about you, but my brain doesn't have enough room to hold that much information. Ergo, DNS."
"Standard DNS sticks to the playbook and makes those translations, with everything out in the open. If you point your browser to zdnet.com, anyone who can sniff out your internet traffic can see what you're looking at. That's where secure DNS comes into play."
"Secure DNS encrypts the traffic so no one can read it. With secure DNS, even your ISP can't view your traffic. Even if you're on your home Wi-Fi network, you should use secure DNS. Also: The best VPN services (and how to choose the right one for you) In other words, without secure DNS, you're not nearly as secure or private as you might think."
DNS translates human-readable domain names to machine-readable IP addresses, preventing the need to memorize IPs. Standard DNS queries are unencrypted, allowing ISPs or anyone sniffing traffic to see visited domains. Secure DNS encrypts DNS traffic so ISPs and on-network observers cannot read queries, improving privacy even on home Wi-Fi. Enabling Private DNS on devices adds protection beyond antivirus and firewalls. Many secure DNS services exist, including Google Public DNS, which offers DNSSEC validation, TLS 1.3 support, and cache-poisoning protections, and many services provide free usage options.
Read at ZDNET
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