Over the last two decades, the fast penetration of the Internet and the digitization of
information products has led to the rise of electronic intermediaries such as Amazon …

Platforms are everywhere. The rise of Uber, Netflix, and Facebook has attracted a lot of
attention to this business model. However, despite its relevance and presence in the digital …

Multihoming, the decision to design a complement to operate on multiple platforms, is
becoming increasingly common in many platform markets. Perceived wisdom suggests that …

This article focuses on the economics of digital markets with particular emphasis on those
features that are commonly deemed critical for Antitrust. Digital markets are often …

This paper contains an overview of the relevant economic research literature on the digital
transformation of news markets and the impact on the quality of news. It compares various …

A major result in the study of two-sided platforms is the strategic interdependence between
the two sides of the same platform, leading to the implication that a platform can maximize its …

This Chapter provides a survey of the economics literature on multi-sided platforms with
particular focus on competition policy issues, including market definition, mergers …

The chapter has ten sections, which cover the theory of two-sided markets and related
empirical work. Section 1 introduces the reader to the literature. Section 2 covers the case of …

This paper presents a broad retrospective evaluation of mergers and merger decisions in
markets dominated by multisided digital platforms. First, we document almost 300 …

We study the competitive forces which shaped ideological diversity in the US press in the
early twentieth century. We find that households preferred like-minded news and that …