Background: Digital platforms include various business models and represent a large and growing part of the economy empowered by digitalization. The added value of platforms depends crucially on their user interactions, which is why adopting new users is crucial. In the internationalization process, digital platforms differ from traditional companies because it is not their own presence that matters, but the users’ location.

Problem: To join a digital platform, the size of the existing user base has been discussed as a decisive feature by the literature. This assumption is based on the concept of network effects. However, these can lose their effect when national borders are crossed and/or digital platforms are location-bound. In the overall discussion about digital platforms, the relevant sub-category of digital marketplaces, especially in the B2B area, has not yet been taken into account and no alternatives for the size of the existing user base have been discussed.

Purpose: This study aims to investigate the attractiveness of digital platform attributes for potential international users of digital B2B marketplaces when the latter enter a foreign market.

Research Question: Which attributes and which of their levels do potential users prefer in a cross-border digital B2B marketplace?

Method: The study is a quantitative, inductive research with an exploratory purpose. An internal realist ontology and a positivist epistemology are applied. Data are collected and analyzed by using the traditional rating-based conjoint analysis. Four attributes with two times two and two times three levels are queried in nine company profiles using an Internet survey questionnaire with n = 159. 

Conclusion: This study extends the existing literature on digital platforms by capturing identifying characteristics of digital B2B marketplaces and exploring potential users' preferences for such platforms. We conclude a high importance of distance to users who are already active on the platform, as well as the language of the platform. This is followed by the location of active users and rounded off with a lower importance of user verification.