This volume analyses the right to the protection of personal data and its application in digital markets. It investigates the interplay between issues arising under contract law, competition law and the protection of new legal entities. Employing an interdisciplinary methodology, this work explores the systemic tensions between the protection of individual rights and market dynamics, proposing interpretative approaches aimed at enhancing the value of data while maintaining a sound balance. The work provides a systematic overview of the intricate European regulatory framework governing data and digital markets through the analysis of the main sources (regulations, directives, national legislation) and the examination of issues addressed in legal literature and case law. In particular, it covers recent European legislation, including the GDPR, the Digital Markets Act, the Digital Services Act, the Data Governance Act and the Data Act, highlighting the pressing need for systematic coordination of this increasingly complex regulatory maze, which risks undermining legal certainty.