Web 2.0 is a perceived transition of the Web to web-based applications. Web 2.0 is the next generation of technology solutions where interactive content is the norm.
There is no agreement on exactly what Web 2.0 means. Depending on who you are speaking with, you may receive different explanations. At it's heart, Web 2.0 is about the maturity of the Web. While many refer to Web 2.0 as companies that employ powerful web technologies, the key components of Web 2.0 are said to include: the Web as a platform, collaboration, and syndication.