WEB TECHNOLOGIES

What is web ?

Web is a system of hypertext documents interlinked to each other.

Why is this Web required ?

The websites which we visit, e.g. facebook, wikipedia and many more, are accessed using Web. It makes information available anywhere in the World.

How do we use Web ?

• Each and every resource present on the Web, which we also call as Web-pages, is given an unique and identifiable address called as URL( Uniform Resource Locator).
• In-order to visit these web-pages, we need Web Browsers (e.g. google chrome, Internet explorer, mozilla-firefox, Opera, Safari ), where we write URL of the required web-page which we want to visit in the address bar of the Web Browser.
• Internet connection is required to carry this request(request for web-page) to the Web and bring response( Web-pages ) from the Web back to user.

Web-page request and response

Web- History and Evolution

In year 1989, Sir Tim Berners-Lee ( who is also known as the father of the WWW( World Wide Web) ) elaborated an IMS (Information Management System) that he built in 1980 which he named 'ENQUIRE' and  wrote a proposal based on it.

In the year 1990, He wrote a more formal proposal to build a Hypertext Project called 'WWW i.e World Wide Web'. In this year Lee used a computer named 'NEXT' as a world's first web server.

Tim Berners Lee with his world's first web server(NEXT)

World's first Web Server (NEXT)

       

• In the same year i.e. 1990, he also wrote world's first web browser.
• In the year 1991, the WWW ( World Wide Web ) was made available to public.
• In the year 1993, the CERN announced WWW ( World Wide Web ) free to all without any kind fees. This year was the beginning of the era of Web 1.0
• The year 2003, with considerable modifications Web 2.0 launched.