Web 2.0 refers to open source technologies associated with web applications that allow users to interact and change website content. It provides a platform through the browser to run software applications and gives users control over their own data. Examples include social networking sites, wikis, blogs, and video and photo sharing sites that allow people to socialize and share interests through individual profiles and networks.

1. Web 2.0 Web 2.0 is open source technology which is commonly associated with web applications.

2. Web 2.0 includes Rich Internet Applications,Service Oriented Architecture and Social web.

3. Web 2.0 allows its users to interact with other users or it allows to change the web site content.

4. CHARACTERISTICS OF WEB 2.0 They provide “network as platform” allowing user to run software applications only through the browser. User can own the data and exercise control over that data.

5. FEATURES OF WEB 2.0 Search,Links,Authoring,Tags,Extensions,Signals EXAMPLES OF WEB 2.0 Web based communities,hosted services,web applications,social networking sites,video sharing sites,wikis,blogs

6. RICH INTERNET APPLICATIONS web applications that have many of the characteristics of desktop applications

7. Delivered by site-specific browser via browser plug-in or virtual machines or sand boxes.

8. Adobe Flash,Microsoft Silverlight and Java are the three top frameworks.