The document discusses the evolution from Web 1.0 to Web 2.0, describing key differences. Web 1.0 was mostly static HTML pages viewed through browsers, while Web 2.0 is more dynamic, featuring user-generated content and applications. Characteristics of Web 2.0 include the web being a platform, read/write functionality, user-generated data stored outside direct control, and often using AJAX. Social trends driving Web 2.0 include broadband adoption, sharing content online, and mass participation. Business models exploit niche communities and web services. Technology advances like XML and browser capabilities enable new types of applications.

1. WEB 2.0

3. A Bubble? ...A bubble? Bubble?
...A
...A Bubble?

4. “Web 2.0 is a group of economically, socially, and
technologically driven changes in attitudes, tools, and
applications that are allowing the Web to become the
next platform for communication, collaboration,
community, and cumulative learning.”

5. Web 2.0 characteristics
• Web is the platform
• The read-write web (as distinct from the read-only web)
• Data comes from users, often many users
• Data stored somewhere outside of your direct control
• Sometimes data combined from multiple sources – XML
data assists this
• Authentication taken care of by site (and often transferable
eg Google, Gmail, etc)
• Often AJAX-based (Asynchronous Javascript and
XML..ability to process in browser without perceptible lag).
5

7. Web 2.0: Evolution Towards a
Read/Write Platform
Web 1.0 Web 2.0
(1993-2003) (2003- beyond)
Web pages, plus a lot of other
Pretty much HTML pages viewed
“content” shared over the
through a browser
web, with more interactivity; more
like an application than a “page”
“Read” Mode “Write” & Contribute
“Page” Primary Unit of “Post / record”
content
“static” State “dynamic”
Web browser Viewed through… Browsers, RSS Readers,
anything
“Client Server” Architecture “Web Services”
Web Coders Content Created by… Everyone
“geeks”
Cuene.com/mima Domain of… “mass amatuerization”

8. Metaphors
• Web 1.0 – web as digital library, largely a
source of information for students. Strive for
content to be authoritative.
• Web 2.0 – web as place for students to build
knowledge, interact, share ideas/ Resulting
content treated accordingly.
8

9. The Web 2.0 Pie Chart!
Social
Business
Technical

10. Social Trends
• Spread of Broadband
– Increasingly ubiquitous connections
• A generation of “web natives”
– Living on the web
– Social networking; blogging; instant messenger
• Create, not just consume
• Some hard lessons about data ownership
– Don’t steal my data; don’t lock me in

11. Business Trends
• Exploit the Long Tail
– At internet scale even niche communities are very large
– “We sold more books today that we didn't sell at all yesterday, than we sold
today of all the books that did sell yesterday.”
– Amazon employee quoted on Wikipedia
• Success of web services
– No need to own the user interface. It's your data that they want
• Users can enrich your data
– “Harnessing collective intelligence of users”
– Review and Recommend; Social Bookmarking; Folksonomies

12. Technology Trends
• The Power of XML
– Easier to exchange and process application independent data
• Agile Engineering
– Incrementally developer your product; short release cycles
– Continually adapt to user needs
– “The Perpetual Beta”
• Maturation of the browser
– XHTML, DOM, CSS, Javascript
– Browser as platform, not just document viewer

13. Students are using Web 2.0
now
• Blogs,e.g. Blogspot, Blogger, Mo’time,
• Social network software, e.g. Myspace, Facebook,
• Tagged photo stores, e.g. Flickr
• Del.icio.us
• Wikis,e.g. Wikipedia
• Communication networks, e.g. Skype
• News and audio services, e.g. podcasts and hosted
video
13

15. Flickr
http://www.flickr.com/
• Simple photo-storing and sharing site
• Tagging by users
• As always educators find unexpected ways to use it
• 16 ways to use

16. Flickr is a social network for sharing photos.
My contacts
“tags” are
available to me
Flickr
shows me
photos
from my
network
Cuene.com/mima

17. Del.icio.us is an Example of a Site that Uses a
“Folksonomy” to Organize Bookmarks
A “Folksonomy” is a spontaneous,
collaborative work to categorize links by a Tags: Descriptive
words applied by
community of users. Users take control of
users to links. Tags are
organize the content together. searchable
Cuene.com/mima

18. Wikipedia is a Collaborative Dictionary
Being Edited in Realtime by Anyone
Cuene.com/mima

19. Blogging is the Most Recognized
Example of Web 2.0

20. Summing Up
• Web 2.0 hard to define, but very far from just hype
– Culmination of a number of web trends
• Importance of Open Data
– Allows communities to assemble unique tailored applications
• Importance of Users
– Seek and create network effects
• Browser as Application Platform
– Huge potential for new kinds of web applications

21. Lokesh Kumar