Electronic intermediaries enable and support electronic markets with their services. This paper
provides a framework based on industrial dynamics theory, for the analysis of the influence of
electronic intermediaries on the performance of markets. We define five market performance
indicators based on the analysis of 10 well-described cases from the literature on electronic markets
that were set up by some kind of intermediary. These indicators are categorized according to four
different market performance goals. We also define 22 success factors that influence market
performance and group them in three categories –market structure, market conduct, and external