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Web 2.0 Definition

Web 2.0 is a collection of World Wide Web pages that emphasizes user-generated content, and interoperability for end users. The term ‘Web 2.0’ actually refers to the current version of online technology compared with the earlier version, characterized by greater user interactivity and collaboration, extensive network connectivity, and advanced communication channels.

A major difference between Web 2.0 and the traditional World Wide Web or web 1.0 is the way web pages are designed and used. A web 2.0 website allows users to interact and collaborate with each other in a social media dialogue, where user-generated content is shared among each other while interacting; whereas in first generation web 1.0 websites are limited to the passive viewing of content. Example: Web 2.0 consists of social networking sites like Facebook, LinkedIn; blogs, video sharing sites (YouTube), hosted services, web applications, and mash-up applications.

Web API:

SOAP and REST are used in Web 2.0 for machine-based interactions. Basically, a web API is an application programming interface (API) for either a web server or a web browser. It is a new Microsoft Framework used to build REST-based interfaces. Through Web API the data can be presented in any format, not just JSON or XML.

Key features of Web 2.0

The term Web 2.0 was popularized by Tim O’Reilly during O’Reilly Media Web 2.0 Conference in late 2004.

7 key features of Web 2.0 are:


The information is categorized & sub-categorized on websites like Yahoo & DMOZ. On the other hand, it allows user’s to create free classification and arrangement of information, regardless of the existing framework. Example: Photo sharing site Flickr and Social bookmarking of

Rich User Interface:

Traditional webs are built on HTML, CSS, and CGI for developing static pages. But web 2.0 uses Ajax and XML to present dynamic rich user experience to users. Example: Google provides Google Maps and Google Assistant

User as a Contributor:

In tradition websites, the information was provided by the website owner and the user receives it. But in Web 2.0 the user can also contribute content through evaluation, forums, review and comment. Example: Amazon’s customer review section lets the users write their reviews and feedback for purchased goods.

Long Tail:

The first generation websites were like a retail business, where the product was sold directly to the user. In Web 2.0 version the products are not sold directly but offered as a service and paid accordingly to consumption. Example: Salesforce CRM services and Google Apps

User Participation:

Unlike traditional websites, web 2.0 offers the users to participate in content sourcing also called Crowdsourcing. Example YouTube and Wikipedia

Basic Trust:

During basic internet days, the content on websites were protected under Intellectual Property Rights. But in web 2.0 the contents on the website is available publicly to share, reuse and distribute. Example: Wikipedia


The contents of traditional websites were delivered as a direct site to home whereas in web 2.0 the content delivery is done through multi-channel including file sharing and permalinks.

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