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What is the difference between Web 1.0, Web 2.0 and Web 3.0

People are confused with the new concepts that appeared few years back talking about the social web (Web 2.0) and the semantic web (Web 3.0) as if they are new versions of the web and the old version does not exist anymore. This article will go through the evolvement of the web and clarify the differences between Web versions.

The first thing is that we have to distinguish between the term and the technology, so for instance the technology evolves but that does not mean that the evolvement of the web is only technology oriented! The fact is that we could have Web 2.0 applications using technologies that run Web 1.0 applications, so if it is not a technology change what is it then?

Web 1.0 also called the Web is:
A system of interlinked, hypertext documents accessed via the Internet. With a Web browser, a user views Web pages that may contain text, images, and other multimedia and navigates between them using hyperlinks.
Web 1.0 is the websites, portals, web mail etc. For dynamic sites and interactive application many technologies and development tools are used such as Java, php, python, coldfusion, etc. Those development tools are evolved as well.

Web 2.0 also called Social Web is:

A perceived second generation of web-based communities and hosted services — such as social-networking sites, wikis and folksonomies — which facilitate collaboration and sharing between users.
So web 2.0 introduced new social platforms over the web that includes but not limited to facebook, twitter, blogs, wikis, etc. Those new terms are build using the same technology that is used to build Web 1.0 applications, the evolvement of the technology introduced a new tools such as flash and ajax scripting tools that allows dynamic browsing on the client browser without refreshing the page, so the interaction between the browser and webserver became better and produced more dynamic look and feel for the user, such as auto suggest when you write a query in google search box.


Web 3.0 also called Semantic Web:

Is an evolving extension of the World Wide Web in which web content can be expressed not only in natural language, but also in a form that can be read and used by software agents, thus permitting them to find, share and integrate information more easily.[1] It derives from W3C director Sir Tim Berners-Lee‘s vision of the Web as a universal medium for data, information, and knowledge exchange.
In other words Web 3.0 is a web that has meaning, or the meaningful web were agents can understand the meaning of the content of the web and connect it together. Web 3.0 uses languages such as RDF and OWL.

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