chapter 7 e-commerce: the internet, intranets, and extranets

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Chapter 7E-Commerce: The Internet,

Intranets, and Extranets

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What is the Internet?• The Development of the Internet

– ARPANET was open system designed for the free flow of information, but available only to members of academic institutions and some in the defense industry.

– U.S. government decided to split the network into a civilian one and a military one

• Civilian network became the Internet

– Internet is now a network of networks

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What is the Internet? (Cont.)

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How the Internet Works

• Definitions

– Uniform Resource Locator (URL)

– Hypertext Transfer Protocol (HTTP)

– Domain Name

– Hypertext Markup Language (HTML)

– Top Level Domain (TLD)

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How the Internet Works (Cont.)

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• IP Number

• Domain Naming System (DNS)

• A domain name is assigned to each IP address

• Domain names are registered by one of a group of companies authorized to assign unique names

Internet Domains

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Internet Domains (Cont.)

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Internet Addressing

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• Static:

– Servers and many other computers and devices are assigned a permanent IP number

• Dynamic: – A computer connected to the Internet intermittently

may be assigned a temporary IP number for the duration of its connection only

Static and Dynamic IP Numbers

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Common Internet Applications

• Email

• File Transfer

• Newsgroups and Blogs

• Instant Messaging

• Internet Telephoning

• Web Browsers

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The World Wide Web• Web Software

– HTML and XML

– Web Page Editors

– Java, JavaScript, and ActiveX

– Web-Application-Interfaces

– VRML

– Cookies

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Intranets and Extranets– Intranet

• A within-organization computer network that uses Internet technologies to communicate

– Extranet

• Uses Internet technologies to facilitate communication and trade between an organization and its business partners, such as suppliers

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Intranets and Extranets (Cont.)

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Establishing an E-CommerceWeb Site

• Several Options1. Installing their own server2. Contracting with an ISP3. Contracting with a Web portal4. Establishing an electronic storefront5. Contracting with a Web hosting service6. Using a virtual Web server7. Setting up a subdomain

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• Dedicated Server

– Expensive option with the greatest degree of control

– Requires expertise

– Specialists needed maintain the server

• Load balancing transfers visitor inquiries from a busy server to a less busy server

Establishing an E-CommerceWeb Site (Cont.)

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• ISP Site

– Low-fee or free space for individual or business Web sites.

– Many small businesses avoid this option

– Can give the appearance that such online businesses are ephemeral

Establishing an E-CommerceWeb Site (Cont.)

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• Web portal– Limited space and design control

• Electronic Storefront– Cybermall

• Web Hosting Service

• Virtual Web Server

• Subdomain

Establishing an E-CommerceWeb Site (Cont.)

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Establishing an E-CommerceWeb Site (Cont.)

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E-Commerce Practices on the Internet

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Online Annoyances

• Spam

• Pop up Windows

• Adware and Spyware