The term "Web 2.0" was coined after the dot-com crash of 2001 to describe the next phase of the internet, which focused on greater user interactivity, collaboration and sharing compared to the earlier, more static web. While some questioned if Web 2.0 was meaningfully different, it emphasized social media platforms, user-generated content, folksonomies and rich user experiences through new technologies like AJAX. Examples included Wikipedia, YouTube, blogs and social networks that allowed people to both consume and contribute information online in new ways.

2. History of Web 2.0
The term, Web 2.0, first gained currency after the 2001 “dot.
Bomb” when the IT bubble that had lasted a good 5 years
burst. While some commentators suggested that the Internet
had been over-hyped, other folks maintained that the crash
signaled the end of the first phase of the Internet and
suggested that the more exciting stuff was yet to come. They
called this new phase or era “Web 2.0.”
Whether Web 2.0 is substantively different from
prior Web technologies has been challenged by
World Wide Web inventor Tim Berners-Lee, who
describes the term as jargon His original vision of the
Web was "a collaborative medium, a place where we
[could] all meet and read and write".[On the other
hand, the term Semantic Web (sometimes referred to
as Web 3.0 was coined by Tim Berners-Lee for a web
of data that can be processed by machines

3. The term "Web 2.0" was first used in January 1999 by
Darcy DiNucci, an information architecture consultant. In
her article, "Fragmented Future", DiNucci writes:[4]
The Web we know now, which loads into a browser
window in essentially static screenfuls, is only
an embryo of the Web to come. The first glimmerings of
Web 2.0 are beginning to appear, and we are just starting
to see how that embryo might develop. The Web will be
understood not as screenfuls of text and graphics but as a
transport mechanism, the ether through which interactivity
happens. It will [...] appear on your computer screen, [...]
on your TV set [...] your car dashboard [...] your cell phone
[...] hand-held game machines [...] maybe even your
microwave oven.

4. is the current state of online technology as it compares to the
early days of the Web, characterized by greater user interactivity
and collaboration, more pervasive network connectivity and
enhanced communication channels.
Web 2.0 applications often use advanced web features
like AJAX to improve the speed of interaction, the term is more
about the type of applications than the technology used.
is the term given to describe a second generation
of the World Wide Web that is focused on the ability
for people to collaborate and share information
online. Web 2.0 basically refers to the transition from
static HTML Web pages to a more dynamic Web that
is more organized and is based on serving Web
applications to users.

5. Basic Trust
User
Participatio
n
Long Tail
User As
ContributorFolksonomy
Rich User
Experience
Dispersion

6. Folksonomy
Traditional Web like Yahoo Directory and DMOZ uses a pre-
defined classification of Information like category & sub category.
On the other hand Web 2.0 without sticking to the existing
framework of classification , allows user create free classification/
arrangement of information. This is also known as Social tagging. T
For example , the photo sharing site Flicker and Social
Bookmarking of del.icio.us
Rich User Experience
Traditional web are built with HTML and CSS、CGI and
had been offered as a static page . On the other hand Web
2.0 uses Ajax Asynchronous JavaScript + XML) presenting
dynamic , rich user experience to users .
For example, Google Provided Google Maps and Google
Suggest

7. Long Tail
The traditional web was like a retail business the product is sold
directly to user and the revenue generated. But in web 2.0 the niche
product is not sold directly but offered as a service on demand
basis and income is generated as monthly fee and pay per
consumption.
The typical example is sales force CRM services and Google Apps
User Participation
In traditional web the contents are solely provider by the
web site owner /company, but in web 2.0 the users
participate in content sourcing. This is also known as
Crowd sourcing.
The typical examples are Wikipedia & You Tube.
Dispersion
In traditional web, the contents were
delivered as direct site to home. But in
web 2.0, the content delivery uses
multiple channel include file sharing &
permalinks.
The typical examples are Bit Torrent and
Mash up

8. User As Contributor
In tradition web, the information is often provided by the site owner and
the user is always the receiver. The information model was One Way . On
the other hand Web 2.0 user also contributes to the content by means of
Evaluation, Review & Commenting.
The typical example is the Amazon.com – customer review section &
Google’s Page Rank mechanism
Basic Trust
In traditional web the contents are protected under
Intellectual Property Rights but on the other hand, in web
2.0 the contents are made available to share, reuse,
redistribute and edit.
The typical examples Wikipedia & Creative Common

9. Instagram
Youtube
Facebook
Twitter
Pinterest

11.  Web 2.0 based sites offer you an interactive user interface,
storage and software facilities through your browser.
 Along with accessing the information from the website,
you can also control the data.
 Flexibility, as far as the possibility of choosing
technologies is concerned.
Easier and faster access to information, When and where
it is needed.
The integration of a variety of technologies in the
teaching-learning activities

12. Examples of Web 2.0
 Blogs. Good places to start your blog are
at Blogger.com and WordPress. Search engines for blogs
are Technorati and Google Blog Search. There is a free
Blogger add-in for editing blogs with MS Word.
Social networking. The online
communities MySpace and Facebook ar
e the most popular social network sites
used primarily by pre-college (MySpace)
and older audiences (Facebook),
respectively.
Podcasts. Search engines for
podcasts are at Podcast Alley and
the iTunes podcast directory where
there are tutorials showing how to
create podcasts.

13. THE END!!!
“Web 1.0 was making the
Internet for people, Web 2.0
is making the Internet better
for companies.” Jeff Bezos