Abstract: Under the digitized background characterized by hyper-competition and transparency, the realization of e-business value has become a new subject for academic circles. Previous studies pointed out that using IT technology could generate firm agility and ambidexterity, thereby increasing revenue and creating value. However, these studies neglected the fact that IT could also realize e-business value through risk control and cost reduction. Based on IT ambidexterity, this paper examined the value creation mechanism of e-business, including the increase of revenue through the e-business ambidextrous capability and reduction of risk and cost of digitization through the use of IT governance. The empirical study of the data of 204 firms confirms that the e-business ambidextrous strategy has a positive effect on the e-business ambidextrous capabilities, and the e-business ambidextrous capability partially mediates the relationship between the e-business ambidextrous strategy and competitive performance. In addition, contractual governance positively moderates the positive relationship between the e-business ambidextrous strategy and e-business ambidextrous capability, while the e-business ambidextrous capability mainly mediates the moderating effect of contract governance in the relationship between the e-business ambidextrous strategy and competitive performance. Finally, relational governance positively moderates the positive relationship between the e-business ambidextrous strategy and the e-business ambidextrous capability, but the moderating role of relational governance on the relationship between e-business ambidextrous strategy and competitive performance does not exist, thus relational governance does not mediate the moderating effect of relational governance in the relationship between the e-business ambidextrous strategy and competitive performance.

Key words: IT ambidexterity, ambidextrous capability, IT governance, E-business value

摘要： 在以高度竞争和透明化为特征的数字化背景下，企业如何实现电子商务价值已经成为学术界面临的新课题。前人的研究虽然指出利用IT技术能够形成组织柔性或双元性组织，从而增加收益并创造价值，但却忽视了IT同时还能通过风险控制和成本降低实现电子商务价值。基于IT双元性，研究数字化情景下电子商务价值的创造机理，即通过电子商务双元能力实现收益增加；并利用IT治理降低数字化风险和成本，进而实现电子商务价值创造。通过对204家企业调研数据的实证研究，结果证实了电子商务双元战略对电子商务双元能力的正向作用，以及电子商务双元能力在电子商务双元战略和竞争绩效之间的部分中介作用。此外，发现了契约治理正向调节电子商务双元战略和电子商务双元能力之间的正向相关关系，同时也正向调节电子商务双元战略和竞争绩效之间的正向相关关系，并且这种正向作用主要通过电子商务双元能力的中介作用影响竞争绩效。最后，还发现，关系治理正向调节电子商务双元战略和电子商务双元能力之间的正向相关关系，而关系治理对电子商务双元战略和竞争绩效之间的关系不存在调节作用，并且对电子商务双元战略的调节效应也不通过电子商务双元能力的中介作用影响竞争绩效。研究的理论贡献在于构建了数字化情景下体现IT双元性的电子商务价值创造模型，实践贡献在于为传统企业在数字化情景下如何利用电子商务双元能力和IT治理获取价值提供现实指导。

关键词: IT双元性, 双元能力, IT治理, 电子商务价值