Abstract: The aim of this dissertation is to perform a profound literature review on platform competition through a systematic analysis of the main tendencies, characteristics and topics that have been addressed historically. In order to do so, the literature review will examine aspects such as the types of platforms, the research interest around them, the main concerns and the key themes addressed throughout the past years. The present study also has the objective of examining the role of the newly proposed concept of “human-complemented platforms” through the example of Twitch, integrating this way the current digital context with the platform competition research themes. Afterwards, the predicted future of platform research is briefly studied, preceding the conclusion of this paper. The theoretical findings point towards the relevance of complementors (and content creators) in the platform ecosystem and, most importantly, towards the need for an efficient platform management that benefits all market participants.