A domain name is a unique name that identifies a website or other online resource on the Internet. It consists of a series of letters and numbers that are separated by periods (also known as dots). For example, "google.com" is a domain name that belongs to the Google company and is used to access their search engine and other online services.
Domain names are used to identify and locate websites and other resources on the Internet. When you enter a domain name into a web browser, your computer sends a request to a domain name server (DNS) to find the corresponding Internet Protocol (IP) address of the website or resource you are trying to access. The DNS then sends back the IP address, and your browser uses that information to connect to the website or resource.
There are many different types of domain names, including top-level domains (TLDs) such as .com, .net, and .org, and country-code top-level domains (ccTLDs) such as .uk, .ca, and .au. You can register and use a domain name for a variety of purposes, including personal or business websites, email servers, and online applications.