Web 2.0 includes two major model move, one is ?user generated content? and other is ?thin client computing?.
Origin of Web 2.0
Before the origin of Web 2.0, Web 1.0 was known as a
term ?Web? that was like warehouse of information and static content. Then,
as time passes, with the advancement of technology and software, a huge amount
of data and content became dynamic and returning custom results to users. With
the evolution of new century, the Web became much more interactive. It allowed
the users to play, stop, rewind and fast-forward through audio and video
content. It was Web 1.5. But gradually, Web-based applications act like local
applications, but on a worldwide level with the social illusion just before
since last two or three years. This is known as Web 2.0.
The concept of ?Web 2.0? began with a conference brainstorming session between O?Reilly and MediaLive International in 2003. Dale Dougherty, web pioneer and O?Reilly VP, noted that the dotcom companies were being crashed very rapidly despite of having quality and right marketing strategy. It is assumed that something is common in all the dotcom companies that were not being distinguished by the client and being the causes of crashing. Though they observed that Web applications have a lot more than it had been used so far. They decided to do something different with web application, thus the concept of Web 2.0 has been evolved. O?Reilly had presented the feature of Web 2.0 in 2004 in a conference claiming the new version of Web. It began to popular since then.
Google, Live, Orkut, YouTube etc are the best examples of Web 2.0. In the model of Web 2.0 O?Reilly had presented that the Web 2.0 based software can do better business and are more efficient. This causes the revolution and many more web applications replacing the most common and popular Web applications e.g. Google AdSense replaced DoubleClick, Flickr replaced Ofoto, Napster replaced mp3.com, Wikipedia replaced Britannica Online, Weblogs replaced personal websites, Search Engine Optimization replaced domain name speculation, Wikis replaced Content Management System while folksonomy replaced taxonomy. There is a long list of Web 2.0 that is accepted widely. But the controversy is still going on about the definition of Web 2.0. Some people are criticizing it saying that it is a meaningless marketing buzzword while many people heartily accept it and enjoy it too.
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