User-friendliness of features employed by online marketplaces and their influence on user behaviour

Summary

The tender concerns an empirical study collecting observational data on user behaviour and user experience on very large online marketplaces. The study will support the European Commission’s monitoring functions under Article 72 of the Digital Services Act, but will not cover legal assessments or compliance determinations. The estimated value is EUR 400,000 and the deadline for submitting tenders is 15 September 2026 at 00:00.