Web2.0 : an introduction

Slide 1: Web 2.0

Slide 3: What is Web 2.0

Slide 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’

Slide 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”

Slide 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

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

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

Slide 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.

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

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

Slide 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”

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

Slide 17: Examples 2.0 Google Maps. http://maps.google.com Flickr. http://www.flickr.com Orkut. http://www.orkut.com Meebo. http://www.meebo.com Digg. http://www.digg.com Odeo http://www.odeo.com

Slide 18: Examples 2.0 Google Maps. http://maps.google.com Visual Maps Mash Up

Slide 19: More Examples 2.0 Flickr. http://www.flickr.com Photo Publishing and Sharing Site

Slide 20: More . . . Orkut. http://www.orkut.com Social Networking Site

Slide 21: And More . . . Meebo. http://www.meebo.com Web based messenger client

Slide 22: And More . . . Digg. http://www.digg.com Social news book marking and sharing site

Slide 23: And More . . . Delicious. http://del.icio.us A Social Book Marking Site

Slide 24: And More . . . Wikipedia. http://www.wikipedia.org A Wiki Encyclopedia

Slide 25: And More . . . Linked In. http://www.linkedin.com A Business Networking Site

Slide 26: And More . . . YouTube. http://www.youtube.com A Video Sharing Site

Slide 27: And More . . . Blogger. http://www.blogger.com A Popular Blogging Tool

Slide 28: And More . . . MySpace. http://www.myspace.com A Social Networking & Media Sharing Site

Slide 29: And More . . . Google Calendar. http://calendar.google.com A Event Scheduling/ Time Tracking Application

Slide 30: And More . . . Zoho Office. http://www.zoho.com A Virtual Web Office Suite

Slide 31: More Examples 2.0 Delicious. http://del.icio.us Wikipedia. http://www.wikipedia.org Linked In. http://www.linkedin.com YouTube. http://www.youtube.com Blogger. http://www.blogger.com MySpace. http://www.myspace.com

Slide 32: 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.

Slide 34: 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

Slide 35: Technically Ajax Fetching Server Side processed data through Client Side JavaScript. XMLHttpRequest (XHR) object.

Slide 37: 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

Slide 38: CSS Cascading Style Sheets. Used for defining the styling rules of a webpage.

Slide 39: 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

Slide 40: Why Ajax is growing so fast ? Because, its Open Source like Linux, PHP, MySql, Open Office etc.

Slide 41: So ? Open Source Technologies ar developed and e 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.

Slide 42: 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

Slide 43: 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)

Slide 44: Biggest Players in Open Source IBM Corporate HP SUN RedHat Apache Software Foundation Non-Profit Mozilla Foundation Organizations Linus Torvalds Individuals

Slide 45: 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

Slide 46: Back to W2, Career Prospects

Slide 47: THANK YOU For Your Passionate Listening

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