Rethinking Antitrust Tools for Multi-Sided Platforms 2018


Publication date: 6 April 2018


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This report investigates how competition agencies can respond to the challenges posed by the multi-sided nature of platform markets, which are particularly common in the digital economy. It asks whether the antitrust tools that are traditionally used to define markets, to assess market power and efficiencies, and to assess the effects of exclusionary conduct and vertical restraints, remain sufficient to address those questions in the context of multi-sided platform markets. It then proposes how these tools might be re-designed or re-interpreted in order to equip competition agencies with the tools they require when analysing these markets. 


In June 2017 the OECD invited a range of expert economists from agencies, academia, and private practice to make practical methodological proposals on how current tools might need to be re-designed or re-interpreted in order to equip competition agencies with the analytical tools they require when analysing multi-sided platform markets.

This report features each of the contributions made by those experts (and their co-authors) along with an opening synthesis chapter by the OECDAccess more related materials at the June 2017 discussion webpage.

This publication is a contribution to the OECD Going Digital project


Digital Economy, Innovation and Competition

OECD Going Digital project



Rethinking the use of traditional antitrust enforcement tools in multi-sided markets, 2017

Competition and Across Platform Parity Agreements, 2015

Market Definition, 2012

Economic Evidence in Merger Analysis, 2011

Two-Sided Markets, 2009

List of all best practice roundtables on competition 

More OECD work on Competition 


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