在一个电子化治理下使用组件化基于架构而取得成功

SucceedingwithCBAIAC,EASIG4/3/2003ine-GovernmentSucceedingwithComponent-BasedArchitectureine-GovernmentConceptLevelWHITEPAPERDevelopedfortheFederalEnterpriseArchitectureProgramManagementOffice(FEA-PMO)IndustryAdvisoryCouncil(IAC)EnterpriseArchitectureSIGMarch2003SucceedingwithCBAIAC,EASIG4/3/2003ine-GovernmentiiDisclaimerWhiletheFederationofGovernmentInformationProcessingCouncils/IndustryAdvisoryCouncil(FGIPC/IAC)hasmadeeveryefforttopresentaccurateandreliableinformationinthisreport,FGIPC/IACdoesnotendorse,approveorcertifysuchinformation,nordoesitguaranteetheaccuracy,completeness,efficacy,andtimelinessorcorrectsequencingofsuchinformation.Useofsuchinformationisvoluntary,andrelianceonitshouldonlybeundertakenafteranindependentreviewofitsaccuracy,completeness,efficacyandtimeliness.Referencehereintoanyspecificcommercialproduct,processorservicebytradename,trademark,servicemark,manufacturerorotherwisedoesnotconstituteorimplyendorsement,recommendationorfavoringbyFGIPC/IAC.FGIPC/IAC(includingitsemployeesandagents)assumesnoresponsibilityforconsequencesresultingfromtheuseoftheinformationherein,orfromuseoftheinformationobtainedfromanysourcereferencedherein,orinanyrespectforthecontentofsuchinformation,including(butnotlimitedto)errorsoromissions,theaccuracyorreasonablenessoffactualorscientificassumptions,studiesorconclusions,thedefamatorynatureofstatements,ownershipofcopyrightorotherintellectualpropertyrights,andtheviolationofproperty,privacyorpersonalrightsofothers.FGIPC/IACisnotresponsiblefor,andexpresslydisclaimsallliabilityfor,damagesofanykindarisingoutofuse,referencetoorrelianceonsuchinformation.Noguaranteesorwarranties,including(butnotlimitedto)anyexpressorimpliedwarrantiesofmerchantabilityorfitnessforaparticularuseorpurpose,aremadebyFGIPC/IACwithrespecttosuchinformation.SucceedingwithCBAIAC,EASIG4/3/2003ine-GovernmentiiiCreditsThispaperistheresultofworkcoordinatedundertheEnterpriseArchitecture(EA)SharedInterestGroup(SIG)oftheIndustryAdvisoryCouncil(IAC).PrimaryAuthorsJohnC.ButlerUnisysCorporation/IAC,[e-mail],Everware/IAC,[e-mail],ICHnet.org/IAC,[e-mail]/IACJohnDodd,CSC/IACPraveenKosgi,UnisysCorporation/IACDavidIsaacs,BusinessPerformanceSystems/IACDavidWebber,XMLGlobal/IACSucceedingwithCBAIAC,EASIG4/3/2003ine-GovernmentivTableofContents1.Introduction.................................................................................................................11.1Purpose..................................................................................................................11.2ScopeofPaper.......................................................................................................11.3Audience................................................................................................................11.4ReferencedDocuments...........................................................................................12.SucceedingwithComponent-basedArchitectures.......................................................22.1Background............................................................................................................22.2CBAintheContextoftheEALifecycle..................................................................32.3BusinessDriversandBenefits.................................................................................42.3.1Adaptable&FlexibleInfrastructure.................................................................42.3.2ConsistentApplicationofPolicyandGuidance................................................52.3.3TimetoMarket/MissionFulfillment................................................................52.3.4LifecycleCostandRiskMitigation..................................................................62.3.5InteroperabilityandInformationSharing..........................................................62.3.6ITValueChainandBusinessStakeholderAlignment........................................72.4CBAImplementationChallenges.............................................................................72.4.1CulturalandBureaucraticImpediments............................................................82.4.2EA,SDLCandAssetManagementProcessChallenges.....................................82.4.3LegacyTechnologiesandArchitecture.............................................................92.4.4SkillsMix......................................................................................................92.4.5BudgetandFundingStructure.......................................................................102.4.6LicensingandIntellectualProperty................................................................102.5KeyEnablers........................................................................................................112.5.1ComponentTechnologies..............................................................................112.5.2CommerciallyAvailableComponents...................