Web 2.0 is the evolution of the Web towards greater simplicity (requiring no
technical knowledge or computer for users) and interactivity (allowing
everyone, individually or collectively, to contribute, share and collaborate
in various forms). The term “Web 2.0" means all technical, features and uses
of the World Wide Web that follow the original form of the web, especially
interfaces that allow users with little technical knowledge to adopt new
functionality of the web. Thus, users contribute to the exchange of
information and can interact (share, exchange, etc.) simply, with both the
content and structure of the pages, but also between them, creating this way
the social web. The user is using the tools at its disposal, as an active
person on the canvas.
The term “2.0" is now used as a generic term to apply the concept of Web 2.0
to other application domains.