Web 2.0 is the second generation of the World Wide Web. It focuses on the web as a platform and offers more opportunities for collaboration, functionality, various applications, and user-generated content.
Another way to think of this reshaping of the World Wide Web is called the “read/write” web. Since this reframing of the internet, web users have been able to communicate in real time with servers, edit web pages, post comments, and communicate with other users.
When Time Berners-Lee invented the World Wide Web in 1989, it was primarily used for static HTML pages. This version of the web, known now as Web 1.0, was about as interactive as pages in a book.