This report takes a look at the regulations, exemptions and impact of PSD2 on the ecommerce marketplace model 13 January 2018 will be a watershed moment for the European payments landscape, with major ramifications for ecommerce. From that date onwards, the revised Payment Services Directive (PSD2) will come into force across the European Economic Area (EEA), bringing with it a long list of changes to how online transactions are handled. While this revision of PSD1 will impact all companies within the payments ecosystem, this paper focusses on one particular business model that will be heavily affected by its demands: the online marketplace. If they fail to successfully adapt to PSD2’s game-changing regulations, even the most successful marketplace could find itself penalized in 2018. This paper looks at PSD2, the key regulations, the changes to its main exemptions and the potential next steps for online marketplaces.