World Wide Web (WWW) – GeeksforGeeks

The World Wide Web is abbreviated as WWW and is commonly known as the web. The WWW was initiated by CERN (European library for Nuclear Research) in 1989. 

WWW can be defined as the collection of different websites around the world, containing different information shared via local servers(or computers).

History: 
It is a project created, by Timothy Berner Lee in 1989, for researchers to work together effectively at CERN. is an organization, named the World Wide Web Consortium (W3C), which was developed for further development of the web. This organization is directed by Tim Berner’s Lee, aka the father of the web. 

System Architecture: 
From the user’s point of view, the web consists of a vast, worldwide connection of documents or web pages. Each page may contain links to other pages anywhere in the world. The pages can be retrieved and viewed by using browsers of which internet explorer, Netscape Navigator, Google Chrome, etc are the popular ones. The browser fetches the page requested interprets the text and formatting commands on it, and displays the page, properly formatted, on the screen. 

The basic model of how the web works are shown in the figure below. Here the browser is displaying a web page on the client machine. When the user clicks on a line of text that is linked to a page on the abd.com server, the browser follows the hyperlink by sending a message to the abd.com server asking it for the page. 

Here the browser displays a web page on the client machine when the user clicks on a line of text that is linked to a page on abd.com, the browser follows the hyperlink by sending a message to the abd.com server asking for the page. 

Working of WWW: 
The World Wide Web is based on several different technologies: Web browsers, Hypertext Markup Language (HTML) and Hypertext Transfer Protocol (HTTP). 

A Web browser is used to access web pages. Web browsers can be defined as programs which display text, data, pictures, animation and video on the Internet. Hyperlinked resources on the World Wide Web can be accessed using software interfaces provided by Web browsers. Initially, Web browsers were used only for surfing the Web but now they have become more universal. Web browsers can be used for several tasks including conducting searches, mailing, transferring files, and much more. Some of the commonly used browsers are Internet Explorer, Opera Mini, and Google Chrome. 

Features of WWW: 

• HyperText Information System 
• Cross-Platform 
• Distributed 
• Open Standards and Open Source 
• Uses Web Browsers to provide a single interface for many services 
• Dynamic, Interactive and Evolving. 
• “Web 2.0” 
   

Components of the Web: There are 3 components of the web: 
 

1. Uniform Resource Locator (URL): serves as a system for resources on the web. 
2. HyperText Transfer Protocol (HTTP): specifies communication of browser and server. 
3. Hyper Text Markup Language (HTML): defines the structure, organisation and content of a webpage. 
    

Also Read | History of Internet

My Personal Notes

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