Web 2.0 is the name used to the describe the second generation of the WWW (world wide web), where it moved static HTML (Hyper Text Markup Language) pages to a more interactive and dynamic web experience. Web 2.0 is focused on the ability for people to collaborate and share information online via social media, blogging and web based communities.
Web 2.0 signaled a change in which the world wide web became an interactive experience between users and web publishers, rather than the one way conversation that had previously existed. It also represents a more populist version of the web, where new tools made it possible for nearly anyone to contribute, regardless of their technical knowledge.

Web 2.0 is pronounced as web-two-point-zero.

History of Web 2.0
The foundational components of web 2.0 are the advanced enabled by Ajax and other applications such as RSS and Eclipse and the user empowerment that they support.

Web 2.0 contoversy
Critics of Web 2.0 maintain that it makes it too easy for the average person to affect online content, which can impact the credibility, ethics and even legality of web content. The extent of data sharing and gathering also raises concerns about privacy and security. Defenders of web 2.0 point out that these problems have existed over since the infancy of the medium.

Web 2.0 Technologies
Most of the technologies used in delivering web 2.0 are rich web technologies, such as Adobe Flash, Microsoft Silverlight and JavaScript. Web 2.0 applications are often based on the decentralized download methodology that made BitTorrent so successful, in which each downloader of content is also a server, sharing the workload and making heavily demanded content more accessible that it would be in the centralized model where demand can lead to overwhelmed servers and pages.

Manufacturing Web 2.0
The integration of web 2.0 communication and collaboration applcations into traditional manufacturing practices and processes has been dubbed manufacturing web 2.0. It takes typical web 2.0 apps and services and incorporates them into every stage of development and production. The use of these technologies and tools faciliates greater collaboration, sharing and referencing of information in a business, ideally leading to better thought out design and more efficient production.

Enterprse Web 2.0
The inclusion of Web 2.0 technologies into an enterprise's business processes, intranet and internet is sometimes reffered to as Enterprise web 2.0. Most enterprise web 2.0 followers use a combination of blogs, social networking and social collaborative tools as well as free, paid and homegrown technologies.

Web 2.0 Suicide
So synonymous with web 2.0 is social networking that the deletion of one's social networking presences throughout the internet is reffered as Web 2.0 suicide. There are web applications designed to faciliate the process, such as the free service web 2.0 suicide machine.

The future of Web 2.0: Web 3.0
Some industry pundits are already claiming that web 2.0 is merely a transitional phase between the early days of the WWW (world Wide Web) existence and a more established phase they are calling web 3.0 also known as the Semantic Web.
The creator of the WWW, Tim Berners-Lee, suggests that the web as a whole can be designed more intelligently to be more intuitive about how to serve a user's needs. Berners-Lee observes that although search engines indes much of the web's content, they have little ability to select the pages that a user really wants or needs.

Ubiquitous Computing
The model of Web 3.0's machine classified, data sharing world create a basis for ubiquitos computing. It also known as pervasive computing, is a scenario in which embedded processing in everyday objects enables intercommunication and unobtrusive data sharing throughout the user's environment. The concept overlaps with that of the IoT (Internt of Things), in which almost any entity or object imaginable can be outfitted with a UID (unique identifier) and the ability to exchange data automatically.





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