Thương mại điện tử - Building E-Commerce Web Sites Chapter 3 - Part 2

CSC 330 E-CommerceTeacher Ahmed Mumtaz Mustehsan GM-IT CIIT Islamabad Virtual Campus, CIIT COMSATS Institute of Information TechnologyT1-Lecture-7Building E-Commerce Web SitesChapter-3Part-IIT1-Lecture-7For Lecture Material/Slides Thanks to: Copyright © 2010 Pearson Education, IncObjectives Describe the major issues surrounding the decision to outsource site development and/or hosting.Identify and understand the major considerations involved in choosing Web server and e-commerce merchant server software.Understand the issues involved in choosing the most appropriate hardware for an e-commerce site.Identify additional tools that can improve Web site performance.T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc1-3T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncTesting, Implementation, and MaintenanceTestingUnit testingunit testing involves testing the site’s program modules one at a timeSystem testingsystem testing involves testing the site as a whole, in a way the typical user will use the site.Acceptance testingacceptance testing verifies that the business objectives of the system as originally conceived are in fact working1-4T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncTesting, Implementation, and MaintenanceImplementation and maintenance: Maintenance is ongoing, with 20% of time devoted to debugging code and responding to emergency situations, 20% with changing reports, data files and links to backend databases; and 60% to general administration and making changes and enhancements to systemBenchmarkingbenchmarking a process in which the site is compared with those of competitors in terms of response speed, quality of layout and design1-5T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncFactors in Web Site Optimization1-6Web site optimization requires that you consider three factors: page content, page generation, and page delivery.T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncSpectrum of Tools for building your own site1-7T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncWeb Site BudgetsFrom $5,000 to millions of dollars/year Depends on what you can afford Sophisticated site development packages appear to reduce costs and increase speed but, the modifications required to fit the package to your business needs rise exponentially. A $4,000 package can easily become a $40,000 to $60,000 development project.1-8T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncWeb Site Budgets contd..Components of budget:System maintenanceSystem developmentContent design & developmentHardwareTelecommunicationsSoftware.1-9T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncComponents of Web Site Budgets1-10T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncSimple versus Multi-tiered Web Site ArchitectureSystem architecture Arrangement of, software, machinery and tasks in an information system needed to achieve a specific functionality is called the system architecture.Single tier Architectureit consisted of a server computer running basic Web server software.Two-tierWeb server and database serverMulti-tier Web application serversBackend, legacy databases1-11T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncTwo-Tier E-commerce Architecture1-12T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncMulti-tier E-commerce Architecture1-13T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc1-14T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncWeb Server SoftwareApacheLeading Web server software (47% of market) Works only with UNIX, Linux OSsMicrosoft’s Internet Information Server (IIS)Second major Web server software (25% of market)Windows-based1-15T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncFunctionalities of Webserver1-16T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncSite Management ToolsBasic toolsIncluded in all Web serversVerify that links on pages are still valid Identify orphan filesThird-party software and services for advanced site managementMonitor customer purchases, marketing campaign effectiveness, etc.Examples: WebTrends Analytics 9, Google Analytics1-17T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncDynamic Page Generation ToolsDynamic page generation: The contents of a Web page are stored as objects in a database, rather than being hard-coded in HTML. When the user requests a Web page, the contents for that page are then fetched from the database.Examples: Tools include CGI (Common Gateway Interface), ASP (Active Server Pages), JSP (Java Server Pages), etc.AdvantagesLowers menu costsPermits easy online market segmentationEnables cost-free price discriminationEnables Web content management system (WCMS)1-18T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncApplication ServersWeb application servers: software programs that provide the specific business functionality required by a Web site.Type of middlewareIsolate business applications from Web servers and databasesSingle-function applications increasingly being replaced by integrated software tools that combine all functionality needed for e-commerce site1-19T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncFunctionalities of Application Servers1-20T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncE-commerce Merchant Server SoftwareOffers an integrated environment that provides most or all of the functionality and capabilities needed to develop a sophisticated, customer-centric siteOnline catalogList of products available on Web siteShopping cartallows shoppers to set aside desired purchases in preparation for checkout, review what they have selected, edit their selections as necessary, and then actually make the purchase by clicking a button1-21T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncE-commerce Merchant Server SoftwareCredit card processingShopping cart works in conjunction with credit card processing software, It verifies shopper’s credit card and then puts through the debit to the card and the credit to the company’s account at checkout. Integrated e-commerce software suites typically supply the software for this function. Otherwise, you need to make arrangements with a variety of credit card processing banks and intermediaries. Like PAYPAL now available in Pakistan1-22T1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, IncMerchant Server Software PackagesIntegrated environment with most or all of functionality needed. Key factors in selecting a package:FunctionalitySupport for different business modelsBusiness process modeling toolsVisual site management and reportingPerformance and scalabilityConnectivity to existing business systemsCompliance with standardsGlobal and multicultural capabilityLocal sales tax and shipping rules1-23Thank YouT1-Lecture-6 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc1-24