What is WWW and Why Do We Use It?

WWW stands for World Wide Web. It is a system of interlinked hypertext documents, typically accessed via the internet. The term was coined by Tim Berners-Lee in 1989, and has since become the standard way to access information on the internet.

In simple terms, www is a subdomain that is commonly used as a prefix to a website's domain name. For example, in the URL "http://www.example.com", "www" is the subdomain and "example.com" is the domain name.

The use of www as a subdomain became popular in the early days of the web as a way to distinguish websites from other types of servers on the internet. At the time, most websites were hosted on servers with names like "ftp.example.com" or "news.example.com" for file transfer and news servers, respectively. The "www" subdomain was used to indicate that a server was hosting a website, and it has since become the standard for websites around the world.

It's worth noting that the use of www as a subdomain is not required, and some websites choose to use a different subdomain or no subdomain at all. For example, the website "example.com" could be accessed using the URL "http://example.com" without the "www" subdomain.