Domain Name System(DNS) is often called the phone book of the internet, this is because like a phone book, which is an equivalent of your contacts on your mobile phone.
The Domain Name System (DNS) simply put is the contact list of the internet, it is the phone book of the internet as a human we remember words (like example.com), but computers and routers communicate using numerical IP addresses (like 192.0.2.1 or 2600::1).
DNS is the globally distributed database that translates the human-readable names you type into your browser into the machine-readable numbers that connect you to the right server.
But if you ask me what DNS means to me from an infrastructure and security perspective it is much more than just a directory. I view DNS as the absolute bedrock of digital operations. If your DNS fails, you might as well not exist on the internet.
Here is how I break down its true significance:
