Internet相關的議題已成為近來的人們話題之一，隨著愈來愈多的Internet商業化應用，新的Internet技術與標準也迅速的出現，擴展Internet應用的企業流程設計亦吸引了各種產業的注意。這個趨勢促使愈來愈多的公司開始深思Internet應用對價值活動、企業價值鏈以及在整個價值系統中扮演的角色可能產生的影響。

本研究藉由不同的Internet商業應用來探討方面的影響以及這些應用滲入企業活動的程度，其中本研究中所謂的網際網路應用包含Internet、Intranet、Extranet三者；在探討價值鏈受到的影響方面，則分為價值鏈主要活動、價值鏈支援活動以及價值系統幾部分來作探討。

主要的資料收集方式是藉由對台灣地區八家企業的資訊主管作深入訪談；而資料分析方式則是比較每家公司採用Internet應用前後在價值活動的變化，並審視每家公司在價值系統中角色的改變。本研究提出十個命題來描述不同型態的應用如何幫助形成新的價值活動，以及價值鏈與價值系統角色的扮演所受到的影響。此外，研究結果也發現政府搖擺不定的政策與網路安全為Internet商業化應用成長上最大的阻礙。

New Internet technologies and standards have emerged rapidly with the increasing Internet applications in business. Business Process designs whichexplorre the opportunities that internet applications offer has alsoattracted much attention among all types of industries.

This trend has encouraged more and more firms to ponder the potential impact of Internetapplications on a firm's value chain, value activities, and also its rolein the whole value system.

This paper attempts to investigate this impact by identifying the various categories of Internet business applications and the extent these applications penetrate the operation of business. Primary data are collected by in-depth interviews with information managers of eight firms in Taiwan, R.O.C. Data analysis includes comparing the value activities of each firms before and after the adoption of Internet applications, examining how the value chain and the firm's role in the value system change. The relationships between some characteristics of the firms and the extent of Internet business applicationsare determined.

Ten propositions are offered to describe how different types of applications help shaping new value activities, value chains, and the roles in value systems. This research also discovers that the uncertainty of Government regulations and the lack of Internet security features are two mainstumbling blocks in the growth of Internet business applications.