Web 2.0: An Introduction 許輝煌 淡江大學資訊工程系 NUK

Web /3/21 del.icio.us Wikipedia iPod/iTunes 無名小站 WRETCH

Web /3/21 Contents What is Web 2.0? Web 1.0 vs. Web 2.0 Key Principles of Web 2.0 Technologies Criticism Core Competencies of Web 2.0 Companies Summary

Web /3/21 What is Web 2.0? (1/2) “Web 2.0 is the business revolution in the computer industry caused by the move to the internet as platform, and an attempt to understand the rules for success on that new platform. Chief among those rules is this: Build applications that harness network effects to get better the more people use them.” By Tim O’Reilly (2006)

Web /3/21 What is Web 2.0? (2/2) "Web 2.0" hints at an improved form of the World Wide Web; and advocates suggest that technologies such as weblogs, social bookmarking, wikis, podcasts, RSS feeds (and other forms of many-to-many publishing), social software, Web APIs, Web standards and online Web services imply a significant change in web usage. From Wikipedia, the free encyclopedia

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Web /3/21 Web 1.0 vs. Web 2.0 (1/2) DoubleClick-->Google AdSense Ofoto-->Flickr Akamai-->BitTorrent mp3.com-->Napster Britannica Online-->Wikipedia personal websites-->blogging evite-->upcoming.org and EVDB

Web /3/21 Web 1.0 vs. Web 2.0 (2/2) domain name speculation-->search engine optimization page views-->cost per click screen scraping-->web services publishing-->participation content management systems-->wikis directories (taxonomy)-->tagging ("folksonomy") stickiness-->syndication

Web /3/21 Key Principles of Web 2.0 (1/2) the web as a platform data as the driving force network effects created by an architecture of participation innovation in assembly of systems and sites composed by pulling together features from distributed, independent developers (a kind of "open source" development)

Web /3/21 Key Principles of Web 2.0 (2/2) lightweight business models enabled by content and service syndication the end of the software adoption cycle ("the perpetual beta") software above the level of a single device, leveraging the power of The Long Tail. easy to pick up by early adopters

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Web /3/21 Technologies Rich Internet application techniques, optionally Ajax- based SOAP (Simple Object Access Protocol) CSS (Cascading Style Sheets ) Syndication and aggregation of data in RSS/Atom Extensive use of folksonomies (in the form of tags or tagclouds, for example) Weblog publishing Mashups REST or XML Web service APIs

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Web /3/21 Criticism It lacks of set standards as to what “Web 2.0” actually means, implies, or requires. Many of the ideas of Web 2.0 already featured before. “Web 2.0” does not represent a new version of World Wide Web, but merely continues to use “Web 1.0” technologies and concepts. “Bubble 2.0”

Web /3/21 Core Competencies of Web 2.0 Companies Services, not packaged software, with cost-effective scalability Control over unique, hard-to-recreate data sources that get richer as more people use them Trusting users as co-developers Harnessing collective intelligence Leveraging the long tail through customer self-service Software above the level of a single device Lightweight user interfaces, development models, AND business models

Web /3/21 Summary A day for a blogger in a Web 2.0 World:  Search on Google  Watch/upload pictures and videos on/to Flickr and YouTube  Download MP3s and podcasts on Odeo  Help update information on Wikipeida  Write personal weblog  Meet friends on Myspace

Web /3/21 Summary YOU: Time’s Person of the Year (2006)  Democracy

Web /3/21 References Wikipedia, Tim O'Reilly, What Is Web 2.0, O'Reilly Network, 2005/9/30.What Is Web 2.0 Paul Graham, WEB 2.0, Nov. 2005, Lev Grossman, Time's Person of the Year: You, 2006/12/13 1, ,00.html 1, ,00.html