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The Evolution of the Web: From Text-based Sites to Web 2.0

Explore how the World Wide Web has transformed from simple text-based sites to interactive Web 2.0 applications. Discover the social and technological developments that led to Web 2.0 and the features that define it.

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The Evolution of the Web: From Text-based Sites to Web 2.0

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  1. 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

  2. Overview Chapter 1: The Web Becomes 2.0

  3. 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

  4. 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

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

  6. 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

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

  8. 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. Email 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

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

  10. 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

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

  12. 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

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

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

  15. 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

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

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

  18. 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

  19. 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

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

  21. 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

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

  23. 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

  24. 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

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

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