Domain Name ?

In short, It is your website name. Which address where Internet users can access your website.

A domain name is used for finding and identifying computers on the Internet. Computers use IP addresses, which are a series of number. However, it is difficult for humans to remember strings of numbers. Because of this, domain names were developed and used to identify entities on the Internet rather than using IP addresses.
A domain names can be any combination of letters and numbers, and it can be used in combination of the various domain name extensions, such as .com, .net and more. A domain has the controller that governs all basic domain functions and manages network security. Thus, a domain is used to manage all user functions, including username/password and shared system resource authentication and access. A domain is also used to assign specific resource privileges, such as user account Register Domain here