Abstract-TheThe term GLOBAL E-COLLABORATION is defined here as the use of e-collaboration technologies for supporting collaboration among organizational members in two or more countries. In line with the general focus on globalization, the research on applied e-collaboration increasingly takes on an international or global perspective [5]. So far, most of this research has been centered on the global virtual team (GVT) as the most common way of structuring global e-collaboration [6]. In general, we are still in the early stages of gaining experience on how to effectively implement and use e-collaboration technology for supporting various forms of global work. There are frequent reports of problems and challenges related to the use of these technologies in nonglobal contexts [9]-[11]. When expanding the scope of the collaboration to a global context, involving several countries with potential cultural diversity, language differences, and varying IT proficiency, this entails additional challenges for successful utilization of e-collaboration technologies [6].To enhance our understanding of the potential challenges involved in applying e-collaboration technologies on a global scale, we need accounts of practical experiences from global projects of this nature. We contribute by presenting experiences and lessons learned from the implementation and use of e-collaboration technology in two large global organizations. Based on interviews with key personnel responsible for the implementation and use of e-collaboration technologies in these organizations, we highlight several potential challenges to global e-collaboration involving technical, organizational, and cultural issues, and discuss how these issues are related to different characteristics of global implementation contexts.The next section presents a brief overview of research related to global e-collaboration, followed by a