2. Overview The World Wide Web has changed the way that people
Do business
Communicate
Share information
The Web has evolved from a collection of Web sites to supporting Web applications
Web 2.0 is characterized by interactive applications
Chapter 1: The Web Becomes 2.0

3. Overview
Chapter 1: The Web Becomes 2.0

4. How the Web Has Changed
Early Web sites contained mostly text and small graphics
Graphics were minimized to decrease the time it takes to load a page using a slower Internet connection
Web sites were not always intuitive
Chapter 1: The Web Becomes 2.0

5. How the Web Has Changed
Newer Web sites provide users with a rich browsing experience
Customizable layout
Bold graphics
Tabs
Additional services
Chapter 1: The Web Becomes 2.0

6. How the Web Has Changed
Chapter 1: The Web Becomes 2.0

7. Social and Technological Developments that Led to Web 2.0
Web 2.0 is the result of several evolutions:
Connectivity is available almost everywhere
The personal computer evolved into an appliance
Mobile phones are capable of accessing the World Wide Web
Web browsers are easy-to-use
Web-based applications were developed for many devices
Web developers deploy new versions of software applications
Society embraced technological changes
Chapter 1: The Web Becomes 2.0

8. Social and Technological Developments that Led to Web 2.0
Chapter 1: The Web Becomes 2.0

9. Social and Technological Developments that Led to Web 2.0
In the 1990s, many new companies called dot-coms used the Web to conduct business
Internet service providers (e.g. service)
Amazon
Priceline
Many dot-coms went out of business by 2001
The Web became a platform for social networking, collaboration, and communication
Chapter 1: The Web Becomes 2.0

10. Web 2.0 video
Chapter 1: The Web Becomes 2.0

11. Features of Web 2.0 Applications
Online conversations
Blogs
Wikis
Sharing media (images, videos, audios)
Collaboration
Digg is a Web site that allows its readers to submit interesting news stories that they find online and digg, or vote for, the news stories that others submitted
Chapter 1: The Web Becomes 2.0

12. Features of Web 2.0 Applications
Chapter 1: The Web Becomes 2.0

13. Features of Web 2.0 Applications
To participate in Web 2.0 applications, you likely will need a username and password
A username is a unique code name that identifies you
A password is associated with your username
You should achieve greater password strength
During the authentication process, the application verifies your credentials
Chapter 1: The Web Becomes 2.0

14. Features of Web 2.0 Applications
Chapter 1: The Web Becomes 2.0

15. The Web as a Platform for Running Applications
Chapter 1: The Web Becomes 2.0

16. A Database-Backed Web
Web 2.0 is often referred to as a read/write Web, or a database-backed Web
Web applications read from or write to a database
A Web server processes requests for Web pages sent over the Internet from a Web client
Client-server model
Chapter 1: The Web Becomes 2.0

17. An ordinary Web site
Chapter 1: The Web Becomes 2.0

18. A Database-Backed Web
Chapter 1: The Web Becomes 2.0

19. Software Accessible on Many Devices
You can browse Web content from almost anywhere on almost any electronic device that has a screen
Chapter 1: The Web Becomes 2.0

20. Software Accessible on Many Devices
In order for a Web application to run on different devices, it is important that they are designed in such a way that separates the process of accessing information from the process of displaying that information
Chapter 1: The Web Becomes 2.0

21. Software Accessible on Many Devices
Chapter 1: The Web Becomes 2.0

22. Rich User Experience
Technologies such as AJAX, Adobe Flash, and Microsoft Silverlight allow Web browsers to display dynamic content without waiting for previous communication with the Web server to complete
Google Maps uses AJAX to allow the user to reposition a map or zoom in and out by dragging
Only the map portion of the window will be updated
Chapter 1: The Web Becomes 2.0

23. Rich User Experience
Chapter 1: The Web Becomes 2.0

24. Rich User Experience
Predictive look-ahead, or AutoComplete, provides suggestions of valid responses based on letters that a user enters in a text box
Chapter 1: The Web Becomes 2.0

25. Rich User Experience
Flash relies on standard Web technologies to provide an engaging user experience
A browser plug-in is a software component that enables dynamic, animated display and functionality within a Web browser
Flash
Silverlight
Many rich Internet applications allow users to create, stream, or view video
Chapter 1: The Web Becomes 2.0

26. Rich User Experience
Chapter 1: The Web Becomes 2.0