Transcript WEB 2.0
Web 2.0:
An Introduction
許輝煌
淡江大學資訊工程系
2007/3/21 @ NUK
無名小站
WRETCH
iPod/iTunes
Wikipedia
del.icio.us
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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
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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)
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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 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
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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
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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)
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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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Technologies
Rich Internet application techniques, optionally Ajaxbased
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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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”
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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
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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
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Summary
YOU: Time’s Person of the Year (2006)
Democracy
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References
Wikipedia, http://en.wikipedia.org/wiki/Web_2.0
Tim O'Reilly, What Is Web 2.0, O'Reilly Network,
2005/9/30.
Paul Graham , WEB 2.0, Nov. 2005,
http://www.paulgraham.com/web20.html
Lev Grossman, Time's Person of the Year: You,
2006/12/13
http://www.time.com/time/magazine/article/0,917
1,1569514,00.html
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