Human society is increasingly influencing the planet and its environmental systems. The existing environmental problems indicate that current production and consumption patterns are not sustainable. Despite the remarkable opportunities brought about by Information and Communication Technology (ICT) to improve the resource efficiency of production and consumption processes, it seems that the overall trend is still not heading towards sustainability. By promoting the utilization of available and underused resources, the ICT-enabled sharing economy has transformed, and even in some cases disrupted, the prevailing patterns of production and consumption, raising questions about opportunities and risks of shared consumption modes for sustainability. The present article attempts to conceptualize the sustainability implications of today’s sharing economy. We begin with presenting a definition for the digital sharing economy that embraces the common features of its various forms. Based on our proposed definition, we discuss the theoretical and practical implications of the digital sharing economy as a use case of ICT. The analysis is deepened by applying the life-cycle/enabling/structural impacts model of ICT effects to this use case. As a result, we show the various positive and negative potentials of digital sharing for sustainability at different system levels. While it is too early to project well-founded scenarios to describe the sustainability status of digital sharing, the implications discussed in our work may help outlining future research and policies in this area.

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The prevailing patterns of consumption and production are not sustainable because they are based on increasing extraction of non-renewable resources (such as fossil fuels or scarce metals) from the Earth's crust and overuse of life-sustaining ecosystem services (such as CO2 assimilation or the water cycle). One strategy to direct consumption to a sustainable pathway is the circular economy. The goal of the circular economy is to slow down the flow of material resources through the anthroposphere and to return them back to nature in a form that is as compatible as possible with the ecosystem processes. We focus on the first aspect, which means that each unit of material resource that enters the economic system should satisfy as much human needs as possible until it is considered waste. We ask the question if and how the emerging "sharing economy" can contribute to this specific goal. We see the phenomenon of sharing economy as a transformation of sharing practices with means of digital Information and Communication Technology (ICT). The resulting Digital Sharing Economy (DSE) can therefore be considered an important special case of ICT impact on sustainable development. We open up an argument on how sharing in the DSE can be either supportive or counter-productive with regard to the circular economy goals. We present a first framework that provides a guideline for the qualitative assessment of new sharing practices with regard to their potential contribution to a circular economy.

Information and communication technology (ICT) has transformed our consumption patterns. The widespread use of smart devices has enabled practicing a wide variety of "sharing economy" activities, a development that brings new ways of resource consumption to our everyday life. The increasing participation in sharing economy activities calls for studies that research the sustainability of this new consumption trend. Although the concept is associated with a more collaborative resource consumption, this may in practice be limited to some resources being shared. The present paper sets the stage for better understanding of the ICT-enabled sharing economy in the context of environmental sustainability. In this work, we present a line of thought that starts with perceiving resource sharing as the core of the sharing economy and continue with a sustainability analysis using a conceptual framework of ICT impacts on sustainability. This study provides a first step towards conceptualizing the sharing economy in a sustainability context and delineates further analysis of the sustainability of digital sharing.