A domain name is your website name. this name is used for finding and identifying an specific place (Such as web or file hosts) on the Internet. Server 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.
Linux, an open-source operating system, is the most popular OS among Web hosting providers. Web hosting providers prefer Linux to the more restrictive Windows platform because it allows greater customization in server capabilities and user options.
Dedicated Servers is a type of Internet hosting in which the client leases an entire server not shared with anyone else. This is more flexible than shared hosting, as organizations have full control over the server(s), including choice of operating system, hardware, etc.