WEB 2.0

...A Bubble?

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

“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.”

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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).

Cuene.com/mima

Web 2.0: Evolution Towards a Read/Write Platform

Web 1.0(1993-2003)

Pretty much HTML pages viewed through a browser

Web 2.0(2003- beyond)

Web pages, plus a lot of other “content” shared over the web,

with more interactivity; more like an application than a “page”

“Read” Mode “Write” & Contribute

“Page” Primary Unit of content “Post / record”

“static” State “dynamic”

Web browser Viewed through… Browsers, RSS Readers, anything

“Client Server” Architecture “Web Services”

Web Coders Content Created by… Everyone

“geeks” Domain of… “mass amatuerization”

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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.

Social

Technical

Business

The Web 2.0 Pie Chart!

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

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

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

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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

Let see some example of

Flickrhttp://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

Cuene.com/mima

Flickr is a social network for sharing photos.

Flickr shows me photos from my network

My contacts “tags” are available to me

Cuene.com/mima

Del.icio.us is an Example of a Site that Uses a “Folksonomy” to Organize Bookmarks

Tags: Descriptive words applied by users to links. Tags are searchable

A “Folksonomy” is a spontaneous, collaborative work to categorize links by a community of users. Users take control of organize the content together.

Cuene.com/mima

Wikipedia is a Collaborative Dictionary Being Edited in Realtime by Anyone

Blogging is the Most Recognized Example of Web 2.0

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

Lokesh Kumar