Web 2.0 represents a shift from static web pages to a more dynamic and collaborative web where users can interact and share information. It includes features like social networking, wikis, blogs and mashups. Ajax allows for asynchronous updating of parts of a web page for a more interactive experience. Open source technologies have helped drive the growth of Web 2.0 by allowing for rapid, community-based development. Major companies are also adopting open source to reduce costs and gain access to a community of developers.

1. Web 2.0

3. What is
Web 2.0

4. A Revolution
• Before Web 2.0 we looked towards web
as an information warehouse.
• But now Web is a platform of
collaboration, a place where users can
share, can interact and can build up on
the work of their own as well as that of
others’

5. Revolution continues
• Earlier we the users used to be on the
receiving end always.
• But now we are empowered, we interact
and we share and
• make WEB a BETTER PLACE TO BE.
• In short
It’s Web “For the People By the people and
From the people”

6. More on Web 2.0
• Web 2.0 also aims to bridge the gap
between desktop and web.
• Bringing desktop to web is one more task
for web 2.0 developers.
• Examples includes
• Online instant messaging sites
• Online office suits

7. Web 2.0 Includes
• Blogs
• Mashups
• Social networking
• Wikis
• And many more

8. Social Networking
• Do I Seriously need to explain it?
• Examples are
• Orkut
• Facebook
• myspace

10. Mashups
• With the launch of Web 2.0 come a
concept of collaboration.
• Sites started to open up their resource
for others to use.
• Mashup is a combination of such open
interfaces from different sites.

12. Wiki
• A site which is user editable
• Used to build content in a collaborative
manner.
• BEST EXAMPLE
• WIKIPEDIA.com

14. Blogsphere
• Blog – Web Log
• A sort of an online diary
• Service providers
• Blogger.com
• Wordpress.com
• Vox.com

15. Blogsphere
• Why important
• Coz from being a consumer you become a
producer.
• The content you write becomes your
reputation, your image on the web.
• “I have seen people getting hefty jobs
just coz of their blogs”

16. Web 1.0 Vs Web 2.0
Static websites.
Emails.
Forums.
Basic search engines.
Groups.
Newsletters.
HTML.
JavaScript for validations
etc.
Blogs.
Wikis.
Audio/Video Sharing.
Social Software.
RSS/XML/Atom feeds.
Webcasts/ Podcasts.
Open APIs.
Mobility.
CSS Designs.
Visual dynamic effects.
Ajax
Advanced JavaScript for
effects.

17. Examples 2.0
Google Maps. http://maps.google.com
Visual Maps Mash Up

18. More Examples 2.0
Flickr. http://www.flickr.com
Photo Publishing and Sharing Site

19. More . . .
Orkut. http://www.orkut.com
Social Networking Site

20. And More . . .
Meebo. http://www.meebo.com
Web based messenger client

21. And More . . .
Digg. http://www.digg.com
Social news book marking and sharing site

22. And More . . .
Delicious. http://del.icio.us
A Social Book Marking Site

23. And More . . .
Wikipedia. http://www.wikipedia.org
A Wiki Encyclopedia

24. And More . . .
Linked In. http://www.linkedin.com
A Business Networking Site

25. And More . . .
YouTube. http://www.youtube.com
A Video Sharing Site

26. And More . . .
Blogger. http://www.blogger.com
A Popular Blogging Tool

27. And More . . .
Zoho Office. http://www.zoho.com
A Virtual Web Office Suite

28. Technology 2.0
AJAX (Asynchronous JavaScript And XML).
CSS (Cascading Style Sheets).
XHTML.
Open Source Developments.
Lightweight Apps.
Differential Data Transfer.
Server side programming.
DOM Scripting.
RSS/XML/ATOM Feeds.

30. Ajax ?
Asynchronous JavaScript And XML.
Differential Data Transfer.
Fast Processing and low bandwidth
consumption.
Sleek and more handy interface.
Open Source technology.
Growing and spreading rapidly.
Desktop like easy interface.
Famous Ajax enabled apps are :
1. Google Maps
2. Gmail

31. Technically Ajax
Fetching Server Side processed data through Client Side
JavaScript.
XMLHttpRequest (XHR) object.

33. Ajax Examples
Live. http://www.live.com
A9. http://www.a9.com
AskX. http://www.askx.com
Wikimapia. http://www.wikimapia.org
Meebo. http://www.meebo.com
Google Maps. http://maps.google.com

34. CSS
Cascading Style Sheets.
Used for defining the styling rules of a
webpage.

35. XHTML ?
Stands for eXtensible HyperText Markup
Language
Aimed to replace HTML
Almost identical to HTML 4.01
Stricter and cleaner version of HTML
HTML defined as an XML application
XHTML is a W3C Recommendation

36. Why Ajax is growing so fast ?
Because, its Open Source like Linux, PHP,
MySql, Open Office etc.

37. So ?
Open Source Technologies are developed and
spread like anything.
Because, Anyone can develop, improve and
redistribute them.
These are self motivated and community
powered.
Every single developer can use his/her
creativity and strengths to develop the
application/technology.
There are no limits and all the freedom.

38. What are Open Source software
licenses ?
Any developer/licensor can draft an
agreement that conforms to the OSD,
though most licensors use existing
agreements like:
• GNU Public License (“GPL”)
• Lesser/Library GNU Public License (“LGPL”)
• Mozilla Public License
• Berkeley Software Distribution license (“BSD”)
• Apache Software License
• See complete list at www.opensource.org/licenses

39. Open Source Examples
Linux (operating system kernel –
substitutes for proprietary UNIX)
Apache Web Server (web server for UNIX
systems)
MySQL (Structured Query Language –
competes with Oracle)
Cloudscape, Eclipse (IBM contributions)
OpenOffice (open source implementation
of Sun’s StarOffice)

40. Biggest Players in Open Source
IBM
HP
SUN/ORACLE
RedHat
Apache Software Foundation
Mozilla Foundation
Richard M. Stallman
Linus Torvalds
Corporate
Non-Profit
Organizations
Individuals

41. Why Companies are moving
towards it ?
Cost savings
Stability
No forced upgrades
Access and broad rights to source code
Access to skilled community of
developers
Ability to define and expedite new
development

42. About the author
some shameless self promotion
Anant Shrivastava a.k.a. Techno Enthusiast
A Workaholic, deeply passionate about GNU / LINUX,
OPEN SOURCE, and latest trends in internet technology
specially web 2.0
Website : http://anantshri.info
Blog : http://blog.anantshri.info
Twitter : @anantshri
Linkedin : http://www.linkedin.com/in/anantshri
For all of my other networking profiles list is here