What is DNS (Domain Name System) ?

DNS (Domain Name System) Domain Name System is a system that allows people to easily remember by simply naming numbered website addresses.

When users type the domain (domain name) information of the website they want to reach in the address bar of the browsers, the browsers communicate with the internet protocol (IP). DNS translates domain name into IP address and browsers can load Internet resources.

The internet service that each device connects to has its own unique IP address. IP Addresses consist of two types; IPv4 (192.168.1.1) and the newer and more complex letter and number mix IPv6 (2001:DB8:7654:3210:FEDC:BA98:7654:3210). Thanks to Domain Name System servers, users do not have to memorize their IP addresses, they can access websites with domain names.

Source:
https://www.cloudflare.com/learning/dns/what-is-dns/
https://www.cisco.com/c/en/us/support/docs/ip/domain-name-system-dns/12683-dns-descript.html
https://aws.amazon.com/tr/route53/what-is-dns/