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E-commerce infrastructure the internet,web and mobile platform
1.
E-commerce 2014 business.
technology. society. tenth edition KKeennnneetthh CC.. LLaauuddoonn CCaarrooll GGuueerrcciioo TTrraavveerr CCooppyyrriigghhtt © 22001144 PPeeaarrssoonn EEdduuccaattiioonn,, IInncc.. Publishing as Prentice Hall
2.
CChhaapptteerr 33 EE--ccoommmmeerrccee
IInnffrraassttrruuccttuurree:: TThhee IInntteerrnneett,, WWeebb,, aanndd MMoobbiillee PPllaattffoorrmm Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall
3.
Class Discussion Google
Glass: Augment My Reality Have you used any augmented reality applications? If so, has it been useful; if not, is it a service that seems interesting? Why or why not? Are there any privacy issues raised by augmented reality applications? What are the potential benefits of augmented reality applications? Are there any disadvantages? What revenue models could work for providers of augmented services? Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-3
4.
The Internet: Technology
Background Internet Interconnected network of thousands of networks and millions of computers Links businesses, educational institutions, government agencies, and individuals World Wide Web (Web) One of the Internet’s most popular services Provides access to billions, possibly trillions, of Web pages Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-4
5.
The Evolution of
the Internet 1961–Present Innovation Phase, 1964–1974 Creation of fundamental building blocks Institutionalization Phase, 1975–1995 Large institutions provide funding and legitimization Commercialization Phase, 1995–present Private corporations take over, expand Internet backbone and local service Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-5
6.
The Internet: Key
Technology Concepts Internet defined as network that: Uses IP addressing Supports TCP/IP Provides services to users, in manner similar to telephone system Three important concepts: Packet switching TCP/IP communications protocol Client/server computing Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-6
7.
Packet Switching
Slices digital messages into packets Sends packets along different communication paths as they become available Reassembles packets once they arrive at destination Uses routers Special purpose computers that interconnect the computer networks that make up the Internet and route packets Routing algorithms ensure packets take the best available path toward their destination Less expensive, wasteful than circuit-switching Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-7
8.
Packet Switching Figure
3.3, Page 117 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-8
9.
TCP/IP Transmission
Control Protocol (TCP) Establishes connections among sending and receiving Web computers Handles assembly of packets at point of transmission, and reassembly at receiving end Internet Protocol (IP) Provides the Internet’s addressing scheme Four TCP/IP layers Network interface layer Internet layer Transport layer Application layer Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-9
10.
The TCP/IP Architecture
and Protocol Suite Figure 3.4, Page 119 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-10
11.
Internet (IP) Addresses
IPv4 32-bit number Four sets of numbers marked off by periods: 201.61.186.227 Class C address: Network identified by first three sets, computer identified by last set IPv6 128-bit addresses, able to handle up to 1 quadrillion addresses (IPv4 can handle only 4 billion) Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-11
12.
Routing Internet Messages:
TCP/IP and Packet Switching Figure 3.5, Page 120 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-12
13.
Domain Names, DNS,
and URLs Domain name IP address expressed in natural language Domain name system (DNS) Allows numeric IP addresses to be expressed in natural language Uniform resource locator (URL) Address used by Web browser to identify location of content on the Web For example: http://www.azimuth-interactive.com/flash_test Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-13
14.
Client/Server Computing Powerful
personal computers (clients) connected in network with one or more servers Servers perform common functions for the clients Storing files Software applications Access to printers, and so on Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-14
15.
The New Client:
The Mobile Platform In a few years, primary Internet access will be through: Tablets Supplementing PCs for mobile situations Smartphones Disruptive technology: Shift in processors, operating systems 33% of all cell phones Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-15
16.
Cloud Computing Firms
and individuals obtain computing power and software over Internet Example: Google Apps Fastest growing form of computing Radically reduces costs of: Building and operating Web sites Infrastructure, IT support Hardware, software Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-16
17.
Other Internet Protocols
and Utility Programs Internet protocols HTTP E-mail: SMTP, POP3, IMAP FTP, Telnet, SSL/TLS Utility programs Ping Tracert Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-17
18.
The Internet Today
Internet growth has boomed without disruption because of: Client/server computing model Hourglass, layered architecture Network Technology Substrate Transport Services and Representation Standards Middleware Services Applications Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-18
19.
The Hourglass Model
of the Internet Figure 3.11, Page 128 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-19
20.
Internet Network Architecture
Backbone High-bandwidth fiber-optic cable networks Private networks owned by a variety of NSPs Bandwidth: 155 Mbps–2.5 Gbps Built-in redundancy IXPs Hubs where backbones intersect with regional and local networks, and backbone owners connect with one another CANs LANs operating within a single organization that leases Internet access directly from regional or national carrier Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-20
21.
Internet Network Architecture
Figure 3.12, Page 129 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-21
22.
Internet Service Providers
(ISPs) Provide lowest level of service to individuals, small businesses, some institutions Types of service Narrowband (dial-up) Broadband Digital Subscriber Line (DSL) Cable modem T1 and T3 Satellite Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-22
23.
Intranets Intranet TCP/IP
network located within a single organization for communications and processing Used by private and government organizations for internal networks All Internet applications can be used in private intranets Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-23
24.
Who Governs the
Internet? Organizations that influence the Internet and monitor its operations include: Internet Corporation for Assigned Names and Numbers (ICANN) Internet Assigned Numbers Authority (IANA) Internet Engineering Task Force (IETF) Internet Research Task Force (IRTF) Internet Engineering Steering Group (IESG) Internet Architecture Board (IAB) Internet Society (ISOC) Internet Governance Forum (IGF) World Wide Web Consortium (W3C) Internet Network Operators Groups (NOGs) Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-24
25.
Insight on Society:
Class Discussion Government Regulation and Surveillance of the Internet How is it possible for any government to “control” or censor the Web? Does the Chinese government, or the U.S. government, have the right to censor content on the Web? How should U.S. companies deal with governments that want to censor content? What would happen to e-commerce if the existing Web split into a different Web for each country? Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-25
26.
Limitations of the
Current Internet Bandwidth limitations Slow peak-hour service Quality of service limitations Latency Network architecture limitations Identical requests are processed individually Wired Internet Copper and expensive fiber-optic cables Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-26
27.
The Internet2 Project
Consortium of 350+ institutions collaborating to facilitate revolutionary Internet technologies Primary goals: Create leading-edge very-high speed network for national research community Enable revolutionary Internet applications Distributed and collaborative computing environments for sciences, health, arts, and humanities initiatives Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-27
28.
The First Mile
and the Last Mile GENI Initiative Proposed by NSF to develop new core functionality for Internet Most significant private initiatives Fiber optic trunk-line bandwidth First mile Wireless Internet services Last mile Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-28
29.
Fiber Optics and
the Bandwidth Explosion in the First Mile “First mile”: Backbone Internet services that carry bulk traffic over long distances Fiber-optic cable: hundreds of glass strands that use light to transmit data Faster speeds and greater bandwidth Thinner, lighter cables Less interference Better data security Substantial investments in fiber optic by telecommunications firms in last decade Enable integrated phone, broadband access, video services Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-29
30.
The Last Mile:
Mobile Internet Access “Last mile”: From Internet backbone to user’s computer, smartphone, and so on Two different basic types of wireless Internet access: Telephone-based (mobile phones, smartphones) Wireless local area network (WLAN)-based Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-30
31.
Wireless Internet Access
Network Technologies Wi-Fi High-speed, fixed broadband wireless LAN (WLAN) Wireless access point (“hot spots”) Limited range but inexpensive For-profit Wi-Fi networks: Boingo, AT&T Wi-Fi Services WiMax High-speed, medium range broadband wireless metropolitan area network Bluetooth Personal connectivity between devices and to Internet Low-speed, short range connection Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-31
32.
Wi-Fi Networks Figure
3.15, Page 145 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-32
33.
The Future Internet
Latency solutions diffserv (differentiated quality of service) Guaranteed service levels and lower error rates Ability to purchase the right to move data through network at guaranteed speed in return for higher fee Declining costs The Internet of Things (IoT) Objects connected via sensors/RFID to the Internet Spearheaded by EU and China Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-33
34.
The Web
1989–1991: Web invented Tim Berners-Lee at CERN HTML, HTTP, Web server, Web browser 1993: Mosaic Web browser w/GUI Andreessen and others at NCSA Runs on Windows, Macintosh, or Unix 1994: Netscape Navigator, first commercial Web browser Andreessen, Jim Clark 1995: Microsoft Internet Explorer Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-34
35.
Hypertext Text formatted
with embedded links Links connect documents to one another, and to other objects such as sound, video, or animation files Uses Hypertext Transfer Protocol (HTTP) and URLs to locate resources on the Web Example URL: http://megacorp.com/content/features/082602.html Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-35
36.
Markup Languages Hypertext
Markup Language (HTML) Fixed set of pre-defined markup “tags” used to format text Controls look and feel of Web pages HTML5 the newest version eXtensible Markup Language (XML) Designed to describe data and information Tags used are defined by user Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-36
37.
Insight on Technology:
Class Discussion Is HTML5 Ready for Primetime? What features of HTML5 are changing the way Web sites are built? Is HTML5 a disruptive technology, and if so, for whom? Are there any disadvantages in Web sites and mobile apps moving to an HTML5 platform? Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-37
38.
Web Servers and
Web Clients Web server software Enables a computer to deliver Web pages to clients on a network that request this service by sending an HTTP request Apache, Microsoft IIS Basic capabilities: Security services, FTP, search engine, data capture Web server May refer to either Web server software or physical server Specialized servers: Database servers, ad servers, and so on Web client Any computing device attached to the Internet that is capable of making HTTP requests and displaying HTML pages Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-38
39.
Web Browsers Primary
purpose to display Web pages Internet Explorer—54% of market Mozilla Firefox—20% Open source Other browsers Google Chrome—19% Apple’s Safari—5% Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-39
40.
The Internet and
Web: Features Features on which the foundations of e-commerce are built: E-mail Instant messaging Search engines Online forums and chat Streaming media Cookies Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-40
41.
E-mail Most
used application of the Internet Uses series of protocols for transferring messages with text and attachments from one Internet user to another Instant Messaging Displays words typed on a computer almost instantly, and recipients can respond immediately in the same way Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-41
42.
Search Engines
Identify Web pages that match queries based on one or more techniques Keyword indexes, page ranking Also serve as: Shopping tools Advertising vehicles (search engine marketing) Tool within e-commerce sites Outside of e-mail, most commonly used Internet activity Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-42
43.
How Google Works
Figure 3.20, Page 161 Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-43
44.
Online Forums and
Chat Online forum Also known as a message board, bulletin board, discussion board, discussion group, board, or forum Web application that enables Internet users to communicate with one another, although not in real time Members visit online forum to check for new posts Online chat Similar to IM, but for multiple users Typically, users log into chat room Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-44
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Streaming Media Enables
music, video, and other large files to be sent to users in chunks so that when received and played, file comes through uninterrupted Allows users to begin playing media files before file is fully downloaded Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-45
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Cookies Small text
files deposited by Web site on user’s computer to store information about user, accessed when user next visits Web site Can help personalize Web site experience Can pose privacy threat Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-46
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Web 2.0 Features
and Services Online Social Networks Services that support communication among networks of friends, peers Blogs Personal Web page of chronological entries Really Simple Syndication (RSS) Program that allows users to have digital content automatically sent to their computers over the Internet Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-47
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Web 2.0 Features
and Services Podcasting Audio presentation stored as an audio file and available for download from Web Wikis Allows user to easily add and edit content on Web page Music and video services Online video viewing Digital video on demand Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-48
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Web 2.0 Features
and Services Internet telephony (VoIP) Voice over Internet Protocol (VoIP) uses Internet to transmit voice communication Video conferencing, video chatting, and telepresence Online software and Web services Web apps, widgets, and gadgets Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-49
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Intelligent Personal Assistants
Software that interacts with the user through voice commands Features Natural language; conversational interface Situational awareness Interpret voice commands to interact with various Web services Examples: Siri, Google Now Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-50
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Mobile Apps
Use of mobile apps has exploded More than 60% of online shoppers are mobile shoppers as well Increased use/purchasing from tablets Platforms iPhone/iPad (iOS), Android, Blackberry App marketplaces Google Play, Apple’s App Store, RIM’s App World, Windows Phone Marketplace Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-51
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Insight on Technology:
Class Discussion Apps for Everything: The App Ecosystem What are apps and why are they so popular? Do you use any apps regularly? Which ones, and what are their functions? What are the benefits of apps? The disadvantages? Are there any benefits/disadvantages to the proprietary nature of the Apple platform? Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Slide 3-52
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Copyright © 2014
Pearson Education, Inc. Publishing as Prentice Hall Slide 3-53
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