This document discusses key concepts related to Web 2.0 including blogs, wikis, RSS feeds, Ajax, mashups, and social networking applications. It compares features of Web 1.0 and Web 2.0, defines important Web 2.0 components like rich internet applications and service-oriented architecture, and provides examples of popular Web 2.0 applications and services.

1. AJAX BLOGS MASHUPS WEB 2.0 PODCASTS WIKIS WEBSERVICES RSS FEEDS ATOMS JSON TAGS SOA SOCIAL WEB Presented By: Harshavardhan Achrekar I-WIDGETS RIA

2. WEB 2.0 APPLICATIONS

10. COMPARISON BETWEEN WEB 1.0 & WEB 2.0 Factors Web 1.0 Web 2.0 Concentration Commerce People User Mode Read Write & Contribute Unit of Content Page Post State of Information Static Dynamic Viewing Medium Web Browsers Web Browsers, RSS Feeds, desktop gadgets, etc Architecture Client-Server Web Services [SOA] Content Creation Web Coders Everyone Domain Geeks Common Masses

11. DEFINITIONS The web as platform. The underlying philosophy of relinquishing control. Glocalization -- making global information available to local social contexts and giving people the flexibility to find, organize, share and create information in a locally meaningful fashion that is globally accessible. An attitude not a technology – Participatory. When data, interface and metadata no longer need to go hand in hand. Power and control via APIs. Giving up control and setting the data free.

12. PEOPLE HAVE HEARD OF Blogs, e.g. Blogger, Blogspot Del.icio.us Wikis, e.g. Wikipedia Flickr for photo sharing Communication networks, e.g. Skype News & audio services, like podcasts & Youtube Social networking sites, e.g. Myspace & Facebook

13. KEY FEATURES Search - Finding information through keyword. Links - To frequently used pieces of information. Authoring - Create constantly updating content which is cumulative such as in blogs and as in wikis it is iterative. Tags - Categorization of content by simple, one-word descriptions to facilitate searching and avoid rigid, pre-made categories. Signals - The use of RSS (Really Simple Syndication) technology to notify users with any changes of the content by sending e-mails to them.

14. COMPONENTS RIA – Rich Internet Application SOA – Service Oriented Architecture SW – Social Web

15. RIA – RICH INTERNET APPLICATIONS Combination of : User interface functionality of desktop software applications. Low-cost deployment of Web applications. Interactive, multimedia communication. Responsive, and effective user experience.

16. SERVICE ORIENTED ARCHITECTURE Application's business logic or individual functions are modularized and presented as services for consumer/client applications. loosely coupled nature; i.e., the service interface is independent of the implementation. Application developers or system integrators can build applications by composing one or more services without knowing the services' underlying implementations.

17. SOCIAL WEB Multimedia – Photo-sharing: Flickr – Video-sharing: YouTube – Audio-sharing: imeem Entertainment – Virtual Worlds: Second Life – Online Gaming: World of Warcraft News/Opinion – Social news: Digg, Reddit – Reviews: Yelp, epinions Communication – Microblogs: Twitter, Pownce – Events: Evite – Social Networking Services: Facebook, LinkedIn, MySpace

18. IMPORTANT ONES… Mashups – A web application that combines data from more than one source into a single integrated tool. Operating System Scenario Mashup Scenario Analogy: Application Access Access Access USER INTERFACE Network Display File System WINDOWS Application Yahoo Google EVDB Amazon APIs API API API API INTERNET

19. CHICAGOCRIME.ORG MASH UP GOOGLE MAPS WITH CRIME DATA IN THE CHICAGO AREA NAVDOG.COM SEARCH FOR INTELLIGENT MAP

20. FEEDS Web feed (or news feed) is a data format used for providing users with frequently updated content. Web feeds are an example of pull technology, although they may appear to push content to the user. Content distributors syndicate(make publicly available) a web feed, thereby allowing users to subscribe to it. Making a collection of web feeds accessible in one spot is known as aggregation, which is performed by an Internet aggregator. Sometimes third parties will read the website and create a feed for it by scraping it. RSS (most commonly said to be an acronym for ‘Really Simple Syndication’) format is an XML-based system that allows users to subscribe to their favorite websites.

22. AJAX AJAX is a group of technologies XHTML and CSS give standards based presentation Dynamic display and interaction using the DOM Data interchange and manipulation using XML and XSLT Asynchronous data retrieval using XMLHttpRequest and Javascript binding it all together. Web applications can retrieve data from the server asynchronously in the background without interfering with the display and behavior of the existing page.

23. REFERENCES http://www.simonwhatley.co.uk/rich-internet-applications-a-background http://blog.sherifmansour.com/?p=187 http://www.socialtimes.com/images/social-starfish.jpg http://en.wikipedia.org/wiki/Mashup_(web_application_hybrid) http://web.princeton.edu/sites/isapps/jasig/2005WinterAustin/presentations/JASIGWeb2LearningDec05v2.pdf