The World Wide Web is a like a huge book whose pages are located on multiple servers present throughout the world. These web pages contain information and are connected by links called “hypertext.” In a book, we move from one page to another in a sequence, but in World Wide Web, we have to follow hypertext links to visit the desired page.
So, it is a network of internet servers containing information in the form of web pages, audios, videos, etc. These web pages are formatted in HTML and accessed via HTTP.

World Wide Web was designed by Tim Berners-Lee in 1991. It is different from the internet which is a network connection used to access the World Wide Web.