Introducing Platform Interactions Model for Studying Multi-Sided Platforms

Multi-Sided Platforms (MSPs) function as socio-technical entities that facilitate direct interactions between various affiliated to them constituencies through developing and managing IT architecture. In this paper, we aim to explain the nature of the platform interactions as key characteristic of any MSP. To this end, we propose the Platform Interaction Model (PIM), built upon Activity Theory and Business Action Theory. We then test its explanatory capability by applying it to four cases. Based on our analysis, we argue that MSPs enable various types of interactions, which has implications for the initial adoption, competitiveness, and subsequent expansion of particular MSP.