A domain name is the name of your site and the address that the website users can access. Actually domain name is the equivalent of a physical address for your website. Like a navigation device asks for a route set or a postal code to provide routing, a web browser asks physical address (IP Address) of a domain name.
Computers are using IP addresses with a sequence of numbers. Remembering the number strings is still difficult for people. Therefore, instead of using IP addresses, domain names were developed and used to discover assets on the Internet.
An organization called ICANN (Internet Corporation for Assigned Names and Numbers) oversees the registration of domain names. ICANN specifies which top-level domains are available and protects a central database showing domain names.
Is domain name and URL same?
A domain name is usually part of a larger address called a URL on the internet. The URL spreads over a much wider area than a domain name, giving more data on a specific editor and server such as registration, machine name, and rule language.
Examples of a domain name URL are in bold, shown belove