Domain Name System (DNS)
The Domain Name System (DNS) is a hierarchical and decentralized naming system for computers, services, or other resources connected to the internet or a private network. It translates human-readable domain names (like example.com) into numerical IP addresses (like 192.0.2.1) that computers use to identify each other on the network, enabling users to access websites and services without memorizing complex numbers.
Developers should learn DNS to manage web hosting, configure servers, set up email services, and ensure reliable internet connectivity for applications. It is essential for tasks like domain registration, setting up subdomains, implementing load balancing, and troubleshooting network issues, particularly in DevOps, system administration, and web development roles.