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Digital Competition Law

Competition Law – Digital Markets Act – Platform Regulation

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  • © 2026
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Overview

Authors:
  1. Sarah Legner

    1. Institute for Business and Tax Law, Kiel University, Kiel, Germany

  • Provides an introduction to the fundamentals of competition economics
  • Examines the regulatory approaches established by the Digital Markets Act and the Platform Regulation
  • Illustrates the challenges for competition protection through current case law

Part of the book series: Springer Textbooks in Law (SPTELA)

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About this book

This textbook examines the protection of competition in digital markets. It presents both the fundamental principles and the sector-specific aspects of European and German competition law and covers the recently introduced Digital Markets Act and Platform Regulation. As the regulation of competition risks in digital markets has attracted increasing legislative and judicial attention, the book offers students and practitioners a comprehensive overview of the evolving field of ‘digital competition law.’

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Table of contents (5 chapters)

  1. Front Matter

    Pages I-XXII
    Download chapter PDF

  2. Characteristics of Digital Markets

    • Sarah Legner
    Pages 1-21

  3. European Competition Law

    • Sarah Legner
    Pages 23-163

  4. Digital Markets Act

    • Sarah Legner
    Pages 165-213

  5. Platform Regulation

    • Sarah Legner
    Pages 215-242

  6. German Competition Law

    • Sarah Legner
    Pages 243-356

  7. Back Matter

    Pages 357-363
    Download chapter PDF
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Authors and Affiliations

  • Institute for Business and Tax Law, Kiel University, Kiel, Germany

    Sarah Legner

About the author

Sarah Legner is Professor of Civil Law and Business Law and Co-Director of the Institute of Business and Tax Law at Kiel University. She studied law at the University of Tübingen and completed her legal clerkship in Tübingen, Stuttgart and Bonn. After completing her doctoral thesis entitled “Schadenstheorien bei Nachfragemacht im deutschen und europäischen Kartellrecht” (University of Tübingen, 2019), she joined the University of Konstanz as a research assistant. In 2023, she completed her postdoctoral qualification (habilitation) with a thesis on multi-party contracts. Her current research focuses on sustainability issues in competition law and the effects of digitalization on consumer law. She is a member of the editorial advisory board of the journal KIR – Künstliche Intelligenz und Recht.

Accessibility Information

PDF accessibility summary

This PDF has been created in accordance with the PDF/UA-1 standard to enhance accessibility, including screen reader support, described non-text content (images, graphs), bookmarks for easy navigation, keyboard-friendly links and forms and searchable, selectable text. We recognize the importance of accessibility, and we welcome queries about accessibility for any of our products. If you have a question or an access need, please get in touch with us at accessibilitysupport@springernature.com. Please note that a more accessible version of this eBook is available as ePub.

EPUB accessibility summary

This ebook is designed with accessibility in mind, aiming to meet the ePub Accessibility 1.0 AA and WCAG 2.2 Level AA standards. It features a navigable table of contents, structured headings, and alternative text for images, ensuring smooth, intuitive navigation and comprehension. The text is reflowable and resizable, with sufficient contrast. We recognize the importance of accessibility, and we welcome queries about accessibility for any of our products. If you have a question or an access need, please get in touch with us at accessibilitysupport@springernature.com.

Bibliographic Information

  • Book Title: Digital Competition Law

  • Book Subtitle: Competition Law – Digital Markets Act – Platform Regulation

  • Authors: Sarah Legner

  • Series Title: Springer Textbooks in Law

  • DOI: https://doi.org/10.1007/978-3-662-73213-7

  • Publisher: Springer Berlin, Heidelberg

  • eBook Packages: Law and Criminology, Law and Criminology (R0)

  • Copyright Information: The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer-Verlag GmbH, DE, part of Springer Nature 2026

  • Hardcover ISBN: 978-3-662-73212-0Published: 03 June 2026

  • Softcover ISBN: 978-3-662-73215-1Due: 17 June 2027

  • eBook ISBN: 978-3-662-73213-7Published: 01 June 2026

  • Series ISSN: 2509-999X

  • Series E-ISSN: 2510-0009

  • Edition Number: 1

  • Number of Pages: XXII, 363

  • Number of Illustrations: 8 b/w illustrations

  • Topics: European Economic Law, Legal Aspects of Computing, International Economics

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