To fully understand this change in evolution one must first understand what is Web 1.0.

Web 1.0

Webopedia describes Web 1.0 simply as being, "same as World Wide Web". So, if you understand the concepts of the traditional Web, than you understand Web 1.0. Wikipedia says the World Wide Web is, "a system of interlinked, hypertext documents accessed via the Internet. With a Web browser, a user views Web pages that may contain text, images, and other multimedia and navigates between them using hyperlinks." Aside from the technological aspects described above Web 1.0 had the same basic relationship between creator and user. That is, a person (i.e. author) and/or entity (i.e. publisher) created material to be consumed by other people (i.e. reader). The information contained in the material was directed one way from creator to user. The user was a passive participant in the process.

Web 2.0
Web 2.0 is the second phase of the Internet where the web is changing from a read only source to one where all people can collaborate with others and publish and share content easily. That is, instead of only reading the text or watching the images on a webpage you didn't create, all users can add content on pages as they see fit. This evolution is the result of new software and services that have developed over the past few years, such as blogs, wikis, RSS, instant messaging, social networking, and podcasting. These new technologies and concepts help people work together to participate in the creation of information.

This can be seen below:


From is a video explanation in simple English of Web 2.0 is: