World Wide Web (WWW)
• World Wide Web, which is also known as a Web, is a collection of websites or
web pages stored in web servers and connected to local computers through
the internet.
• These websites contain text pages, digital images, audios, videos, etc. Users
can access the content of these sites from any part of the world over the
internet using their devices such as computers, laptops, cell phones, etc.
• The WWW, along with internet, enables the retrieval and display of text and
media to your device.
• The building blocks of the Web are web pages which are formatted in HTML
and connected by links called "hypertext" or hyperlinks and accessed by HTTP.
• These links are electronic connections that link related pieces of information
so that users can access the desired information quickly.
• Hypertext offers the advantage to select a word or phrase from text and thus
to access other pages that provide additional information related to that word
or phrase.
• A web page is given an online address called a Uniform Resource Locator (URL).
• A particular collection of web pages that belong to a specific URL is called a
website, e.g., www.facebook.com, www.google.com, etc.
• So, the World Wide Web is like a huge electronic book whose pages are stored
on multiple servers across the world.
• Small websites store all of their Webpages on a single server, but big websites
or organizations place their Webpages on different servers in different countries
so that when users of a country search their site they could get the information
quickly from the nearest server.
• So, the web provides a communication platform for users to retrieve and
exchange information over the internet.
• Unlike a book, where we move from one page to another in a sequence, on
World Wide Web we follow a web of hypertext links to visit a web page and
from that web page to move to other web pages.
• You need a browser, which is installed on your computer, to access the Web.
Difference between WWW and Internet
• Some people use the terms 'internet' and 'World Wide Web' interchangeably.
They think they are the same thing, but it is not so.
• Internet is entirely different from WWW. It is a worldwide network of devices
like computers, laptops, tablets, etc.
• It enables users to send emails to other users and chat with them online. For
example, when you send an email or chatting with someone online, you are
using the internet.
• But, when you have opened a website like google.com for information, you are
using the World Wide Web; a network of servers over the internet.
• You request a webpage from your computer using a browser, and the server
renders that page to your browser.
• Your computer is called a client who runs a program (web browser), and asks
the other computer (server) for the information it needs.