Web 2.0, one of the hottest terms on the Internet, below are the data from searches using the keyword "web2.0" on three mainstream search engines: Google, Baidu, and Yahoo.
Google: About 12,200,000 results match the query for "web2.0."
Baidu: Found approximately 19,400,000 relevant web pages.
Yahoo: 1-10 of 44,100,000 results for "web2.0."
From the above data, we can see how popular Web 2.0 is, but I think very few people can accurately define what it really means.
If you want to accurately understand what Web 2.0 is, I recommend reading the article by Tim O’Reilly, known as the "Father of Web 2.0," titled **What Is Web 2.0**.
However, compared to a long essay, you might prefer a short video that explains it in a more concise way.