本研究之目的為通過研究專門指定的B2C跨境電子商務平台（AmazonB2C商店，e-Bay和Ali-express）來評估並確定共享價值和物流服務品質如何透過平台信任力影響客戶的關係承諾。本研究透過實證性研究來建構理論，將研究成果應用於B2C跨境電子商務平台，使其具有理論與實務的具體貢獻。本研究選擇AmazonB2C商店之客戶作為分析單位。透過線性結構模式分析工具，探討AmazonB2C平台所提供之共享價值及物流服務品質和平台的信任力，與關係承諾之關係。正如Tsai&Ghoshal(1998)驗證出人與人之間的社會互動對資源的交換有正向的關係；Arnott,D.C.,Wilson,D.,Mukherjee,A.,&Nath,P.(2007)提出隨著時間的增長而累積的共享的價值觀，將會增進對該社群的承諾與信任。另外Wang（2015）將物流配送描述為電子商務企業與消費者之間的橋樑，電子商務企業的核心競爭力不僅限於價格競爭，物流服務變得具有很大的優勢，影響消費者的認知和信任。又如學者Morgan&Hunt(1994)認為信任將會影響關係承諾，在B2C跨境電子商務平台中保持較高的消費者之信任對提高客戶關係承諾非常重要。根據我們的研究結果發現顯示平台信任力對物流服務品質的影響是部份完全中介變數，也就是說物流服務的品質對關係承諾有直接的影響，價值分享卻必須藉經由達成平台的信任力才能夠影響與客戶之間的關係承諾，物流服務品質和關係承諾的關係間，平台信任力為部分中介變數，而價值分享的影響卻必須經由平台信任力為完全中介變數才能達成關係承諾的效果

Thepurposeofthisresearchistoevaluateanddeterminehowsharedvalueandlogisticservicequa litycaninfluencecustomerrelationshipcommitmentsthroughplatformtrustbystudyingspeciallyde signatedB2Ccross-bordere-commerceplatforms(AmazonB2Cstore,e-BayandAli-express).Wee mployempiricalresearchtoconstructthetheoryinthisstudy,andapplytheresultstoB2Ccross-border e-commerceplatforms,allowingthisstudytohaveconcretetheoreticalandpracticalcontributions.In thisstudy,customersofAmazonB2Cstoresareselectedastheanalysisunit.Throughtheuseoflinearst ructuremodelanalysistools,weexploretherelationshipbetweenRelationshipCommitmentandthet rustworthinessofAmazonB2Cplatform’sprovidedsharedvalueandlogisticservicequality.Tsai&G hoshal(1998)hadprovedthatsocialinteractionbetweenpeoplehasapositiverelationshipwiththeexc hangeofresources;onetheotherhand,Arnott,DC,Wilson,D.,Mukherjee,A.,&Nath,P.(2007)propo sedthatthesharedvaluesaccumulatedovertimewillincreasethecommitmentandtrustinthecommun ity.Furthermore,Wang(2015)describedlogisticsdistributionasabridgebetweene-commercecomp aniesandconsumers—thecorecompetitivenessofe-commercecompaniesisnotlimitedtopricecom petition,butinsteadlogisticsserviceshavebecomeagreatcompetitiveadvantagethataffectsconsum ers’perceptionandtrust.Inaddition,scholarsMorgan&Hunt(1994)alsobelievethattrustwillinfluen cerelationshipcommitment,demonstratingthatmaintaininghighconsumertrustiscrucialtoenhanci ngcustomers’relationshipcommitmentinB2Ccross-bordere-commerceplatforms.Basedonourres earchresults,ourstudyhasshownthattheinfluenceofplatform’strustworthinessonlogisticservicequ alityisapartiallyfullmediationvariable.Thisindicatesthatwhilelogisticservicequalityhasadirecti mpactonrelationshipcommitments,valuesharingcanonlyinfluencetherelationshipcommitments withcustomersthroughthesuccessfulestablishmentofplatform’strustworthiness.