Chapter 7 Extranets and The new Web 2.0 and 3.0 eras Val kenneth Magtanong

Extranet

An extranet is a computer network that allows controlled access from outside of an organization's intranet. Extranets are used for specific use cases including business-to-business (B2B). In a business to business context, an extranet can be viewed as an extension of an organization's intranet that is extended to users outside the organization, usually partners, vendors and suppliers, in isolation from all other Internet users. It is in context of that isolation that an extranet is different from an intranet or internet. In contrast, businesss to consumer (B2C) models involve known servers of one or more companies, communicating with previously unknown consumer users. An extranet is similar to a DMZi n that it provides access to needed services for channel partners, without granting access to an organization's entire network.

Difference of Intranet and Extranet The main difference between the three is accessibility. The Internet is public while the other two are highly restricted. Home users, if they use one at all, would only use an intranet to share files between computers and typically use the Internet when searching for and sharing information. Businesses and organizations are the main users of both intranets and extranets in order to restrict access to confidential data.

Extranet

WEB 2.0 and Web 3.0 Eras

Web 2.0 Web 2.0 describes World wide web sites that use technology beyond the static pages of earlier Web sites. The term was coined in 1999 by Darcy DiNucci and was popularized by Tim O'Reilly at the O'Reilly Media Web 2.0 conference in late Although Web 2.0 suggests a new version of the World wide web, it does not refer to an update to any technical specification, but rather to cumulative changes in the way Web pages are made and used. A Web 2.0 site may allow users to interact and collaborate with each other in a social media dialogue as creators of useer- generated content a virtual community, in contrast to Web sites where people are limited to the passive viewing of content. Examples of Web 2.0 include social networking sites, blogs, wikis, folksonomies, video sharing sites, hosted services, Web applications, and mashups.

Web 3.0 John Markoff of the New York Times recently suggested naming this third-generation of the Web, “Web 3.0”. This suggestion has led to quite a bit of debate within the industry. Those who are attached to the Web 2.0 moniker have reacted by claiming that such a term is not warranted while others have responded positively to the term, noting that there is indeed a characteristic difference between the coming new stage of the Web and what Web 2.0 has come to represent. The term Web 2.0 was never clearly defined and even today if one asks ten people what it means one will likely get ten different definitions. However, most people in the Web industry would agree that Web 2.0 focuses on several major themes, including AJAX, social networking, folksonomies, lightweight collaboration, social bookmarking, and media sharing. While the innovations and practices of Web 2.0 will continue to develop, they are not the final step in the evolution of the Web.

Evolution of Web

Blog A blog (a truncation of the expression weblog) is a discussion or informational site published on the World Wide Web and consisting of discrete entries ("posts") typically displayed in reverse chronological order (the most recent post appears first). Until 2009 blogs were usually the work of a single individual occasionally of a small group, and often covered a single subject. More recently "multi-author blogs" (MABs) have developed, with posts written by large numbers of authors and professionally edited. MABs from newspapers, other media outlets, universities, think tanks, advocacy groups and similar institutions account for an increasing quantity of blog traffic. The rise of Twitter and other "microblogging" systems helps integrate MABs and single-author blogs into societal newstreams. Blog can also be used as a verb, meaning to maintain or add content to a blog.

Wiki A wiki is a web application which allows people to add, modify, or delete content in collaboration with others. In a typical wiki, text is written using a simplified markup language (known as "wiki markup") or a rich-text editor While a wiki is a type of content management system, it differs from a blog or most other such systems in that the content is created without any defined owner or leader, and wikis have little implicit structure, allowing structure to emerge according to the needs of the users.

RSS feeds RSS (Rich Site Summary); originally RDF Site Summary; often called Really Simple Syndication, uses a family of standard web feed formats to publish frequently updated information: blog entries, news headlines, audio, video. An RSS document (called "feed", "web feed", or "channel") includes full or summarized text, and metadata, like publishing date and author's name. RSS feeds enable publishers to syndicate data automatically. A standard XML file format ensures compatibility with many different machines/programs. RSS feeds also benefit users who want to receive timely updates from favourite websites or to aggregate data from many sites.

Social networking sites A Web site that provides a venue for people to share their activities with family, friends and colleagues or to share their interest in a particular topic. Facebook, Google+, LinkedIn and Twitter are the leading social sites. Members create an online profile with biographical data, photos and any other information they choose to post. They communicate with each other by making their latest thoughts public in a blog-like format or via , instant messaging, voice or videoconferencing to selected members.

How It Started Named for "six degrees of separation," SixDegrees.com was the first social site from 1997 to It was followed in 2002 by Friendster and MySpace a year later. Started by two friends, MySpace became extremely popular, and its parent company, Intermix, was acquired by News Corporation for $580 million two years after MySpace was launched. See MySpace and Friendster. Facebook came out in 2004 targeting college students, but when it opened to everyone, it grew exponentially to become the top social site. Two years later, Twitter was launched with a different approach but created its own revolution within a short time. See Facebook, Google+, LinkedIn and Twitter.

So here is the list I found in WikiPilipinas of the Top ten social networking sites in the Philippines in 2014:

1. Facebook.com 2. Youtube.com 3. Google.com.ph 4. Yahoo.com 5. Google.com 6. Abs-cbnnews.com. 7. Blogspot.com 8. Amazon.com 9. Wikipedia.org 10. Inquirer.net..

Podcast A podcast is a digital medium consisting of an episodic series of audio, digital radio, PDF, or ePub files subscribed to and downloaded through web syndication or streamed online to a computer or mobile device. The word is a neologism and portmanteau derived from "broadcast" and "pod" from the success of the iPod, as audio podcasts are often listened to onportable media players.

Internet2 Internet2 is a not-for-profit United States computer networking consortium led by members from the research and education communities, industry, and government. The Internet2 consortium administrative headquarters are located in Ann Arbor, Michigan, with offices in Washington, D.C. And Emeryville, California.

That’s all Thank you!