Web 2.0 By John Pereless Web 2.0 explains World Wide Web sites i.e. www that use technology except the static or html pages of previous web sites era. This term was given in year 1999 by Darcy DiNucci and was in existence by Tim O'Reilly at O'Reilly Media Web 2.0 conference in final trimester of year 2004. Though web 2.0 advices a new version of the World Wide Web and it does not belong to any update related to technical specification or specialization, but despite to contagious changes in the way we use Web pages built in modern world. The chunks of code or dynamic programming done to implement new version of www is known as web 2.0! A Web 2.0 site allow users to communicate and collaborate each other in a social media dialogue as creators of user-generated content in a virtual community, in oppose to websites where people are confined to neutral seeing of content. Some of the examples of Web 2.0 are social networking sites [They allow messaging, calling, live interaction via voice or text chat etc ], blogs [Blogs have features like media integration, gallery uploads and widgets configuration etc], wikis [The similar fundamental on widgets or further informative tools integrated to make them interactive], folksonomies, video sharing sites [Lets say Youtube, Vimeo, Metacafe etc], hosted services [Here comes concept of ecommerce from where people create their virtual shop heading customers to 3’rd party sites for accomplishment of checkout process], Web applications like live chat with their support and interactive live meeting or let’s say project management PMS services etc! Web 2.0 is totally different from existing old web technologies and has been challenged by World Wide Web master Tim Berners-Lee, explains the term as mock! His principal focus of inventing the web was "a common platform or a place where we all meet & share the ideas via reading & writing" Merits of Web 2.0 Web 2.0 innovations can be an effective draw for an association; their intelligence guarantees to bring more representatives into everyday contact at lower cost. At the point when utilized adequately, they likewise may energize cooperation in ventures and thought offering, subsequently developing an organization's pool of learning. They may bring more prominent extension and scale to associations also, fortifying securities with clients and enhancing correspondences with suppliers and outside accomplices. This current year's review transformed up solid proof that these points of interest are interpreting into measurable business picks up. When we got some information about the business profits their organizations have picked up as an aftereffect of utilizing Web 2.0 advances, they regularly report more prominent capacity to impart thoughts; enhanced access to learning specialists; and decreased expenses of interchanges, travel, and operations. Numerous respondents likewise say Web 2.0 instruments have diminished the time to market for items and have had the impact of enhancing representative fulfillment.