TheRoleofBusinessCaseAnalysisinSoftwareEngineeri：商业案例分析在软件工程中的作用

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1、TheRoleofBusinessCaseAnalysisinSoftwareEngineeringLecture#1DonaldJ.ReiferGuestLecturerUSCCenterforSoftwareEngineeringOctober20051CopyrightRCI,2005WhyWriteaBookonSoftwareBusinessCases?Overtheyears,Ihaveobservedthatmanysoftwareengineersdon’tknowhowtojustifyproposedchangesorimp

2、rovementsusingeithereconomicanalysesmethodsorbusinesscasesInmanyofthesecases,theseengineersaretryingtojustifychangestechnicallytomanagerswhocomefromanon-technicalbackground(financial,marketing,etc.)Thebookwaswrittentoserveasatextbookforteachingsoftwareengineerstowinthebattleo

3、fthebudgetOctober20052CopyrightRCI,2005ForSoftware,ChangeisConstantAgilemethodsStreamlinedprocessesBestengineeringpracticesMetrics-basedmanagementCOTS-basedsystemsArchitecture-firstProcessparadigmsComponent-basedcompositionReuse/patternsProduct-linesExtremeprogrammingExperien

4、cefactorySearchingforwaystodothejobfaster,betterandcheaperOthersilverbulletsOctober20053CopyrightRCI,2005BusinessCasesQuantifytheImpactofSuchChangesAsunderstoodbymost,engineeringdecisionsinvolvemanyoptionsanddifficulttradeoffsMaybeseveraltechnicalsolutionsfortheproblemThebest

5、technicalsolutionisdeterminedbyevaluatingthetradeoffsusingavarietyofcriteriaselectedforthatpurposeSoftwareengineeringprovidesyouthemethodsandtoolstounderstandthetradeoffsandselectthebestanswer(typicallyunderconstraints)Managementrejectsmanyoftheserecommendationsbecausethebusi

6、nessbenefitsarenotquantifiedOctober20054CopyrightRCI,2005PervasiveIssuesWhenDevelopingBusinessJustificationsCommondefinitionofcostsandbenefitsnotwidelyacceptedacrosstheindustryProductivity,costandqualitydataconsideredhighlyconfidentialandkeptsecretCommondefinitionofthejustifi

7、cationprocessesinvolvedlackingwithintheengineeringcommunityDifficulttoattributeresultingnumberstoonecauseoranotherHardtocommunicateresults-engineerstalktechnical,decision-makerstalkbusinessGoalofthelectureistohelpyoucommunicatebetterOctober20055CopyrightRCI,2005WhatAreweGoing

8、toCover?PartI-FundamentalConceptsChapter1:ImprovementisEverybody’sBu