web 2.0


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web 2.0

  1. 1. WEB 2.0
  2. 2. A Bubble? ...A bubble? Bubble? ...A ...A Bubble?
  3. 3. “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.”
  4. 4. 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
  5. 5. 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”
  6. 6. 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
  7. 7. The Web 2.0 Pie Chart! Social Business Technical
  8. 8. 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
  9. 9. 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
  10. 10. 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
  11. 11. 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
  12. 12. 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
  13. 13. 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
  14. 14. 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
  15. 15. Wikipedia is a Collaborative Dictionary Being Edited in Realtime by Anyone Cuene.com/mima
  16. 16. Blogging is the Most Recognized Example of Web 2.0
  17. 17. 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
  18. 18. Lokesh Kumar