therefore are commonly referred to as “two-sided platforms”. We address challenges to market definition that accompany these … shaping markets with two-sided platforms. Owing to the complementarities of services provided to the user groups the platforms …

effects. Intermediaries manage these network effects and thus act as platforms that bring users together. This paper reviews … key findings from the literature on network effects and two-sided platforms. It lays out the basic models of monopoly … platforms and platform competition, and elaborates on some routes taken by recent research. …

For many products, platforms enable sellers to transact with buyers. We show that the competitive conditions among … by joining different platforms. This allows platforms to sustain high fees and explains why, for example, in some online … markets, several homogeneous platforms segment the market. Instead, if product market competition is soft, agglomeration on a …

effects. Intermediaries manage these network effects and thus act as platforms that bring users together. This paper reviews … key findings from the literature on network effects and two-sided platforms. It lays out the basic models of monopoly … platforms and platform competition, and elaborates on some routes taken by recent research …

Digital platforms have reshaped many product markets and play an increasingly important role in economies around the … globe. Some of these platforms have become powerful players and may possess a lot of market power. Economists use a number … context of digital platforms. In particular, we focus on assessing entrenched market power and the role of potential …