Platform-based organisations are assuming increasing importance in the provision of both old and new services. This paper shows how platforms are giving rise to a series of regulatory challenges, with a focus on their legal definition, labour-related issues in the digital sphere and the role of data between privacy protection and competition. Download Network Industries Quarterly, Vol. 21, issue 3, 2019 (September) at https://cadmus.eui.eu/bitstream/handle/1814/64164/NIQ_2019_Vol21_Issue3.pdf