The Domain Name System (DNS) is a decentralized naming system for computers, services, or any resource connected to the internet or a private network. It translates easily memorizable domain names, like “example.com”, into numerical IP addresses, which are used by computers to identify each other on the network.
DNS serves as the phonebook of the internet, enabling users to access websites and other online services using human-readable domain names rather than remembering the complex numerical IP addresses associated with each resource. When you type a domain name into your web browser, your device queries DNS servers to obtain the corresponding IP address needed to connect to the requested website or service. DNS operates on a hierarchical and distributed database structure, with multiple servers worldwide responsible for different parts of the domain name hierarchy.