The authoritative article is of course what is Web 2.0 from the boss of o'reilly Publishing.
However, there is also an interesting saying: the Web2.0 is nothing but means the Web is going from client/server model to peer-to-peer model, or in other words, from elite model to mass model. just like music goes from classic to pop, dance from stage to street, TV from star actress to Super Girls, books from literature to cartoons, etc, etc. more
Xie Wen, a veteran of the Internet, is more easy to understand: "in the Web 1.0 era, we are concerned with people, Web 2.0 stores, and Web 1.0 stores. The Web 2.0 community must be developed based on the Community form, but Web 2.0 is not necessarily the community ." He also gave the Web 2.0 company the conditions for success: "This company must have modern and standardized enterprise systems and game rules, clear and complete strategies, experienced and competent teams, more than $10 million in investment, 1000 people/year of manpower. investment and 3 years of growth. In addition, this community should meet the following conditions: the average age of the customer is around 25 years old, the average education level is Junior College, Alexa ranks more than 10000, and the average PV is 15, the average daily online time of the customer is more than 15 minutes."