European Commission Regulation (EU) 677/2011 of 7 July 2011. establishing detailed rules for the implementation of fu” is an important and relevant document that will be of interest not only to specialists in the field of law and economics, but also to anyone who seeks to understand the intricacies of European legislation. This regulation addresses issues related to the implementation and application of functional units (FU) within the European Union, making it an indispensable source of information for lawyers, economists, as well as students and teachers studying European integration and legal aspects. The book is written by a team of authors, which allows us to present a variety of opinions and approaches to the interpretation of the regulations. Each of the authors contributes based on their own experience and knowledge, which makes the text multifaceted and rich. The reader will be able to find in it not only legal aspects, but also practical recommendations for the application of the regulation in real life. This makes the book particularly valuable for practicing lawyers and professionals working in the international field. The main theme of the book is the rules concerning the implementation of functional units that play a key role in the functioning of the internal market of the EU. Regulation 677/2011 lays down clear and detailed rules to be followed by all Member States. This creates common conditions for doing business and ensures the protection of consumer rights. Readers will be able to learn about how regulations affect various sectors of the economy, including financial services, healthcare, and technology. The book will be of interest to a wide range of readers: from law students to professionals working in the field of international law and European integration. It can also attract the attention of researchers and analysts who study the impact of European legislation on national legal systems. The topics raised in the book address not only the legal aspects, but also the economic, social and political implications, making it an important source for anyone interested in the development of the European Union. The style of the authors is clear and accessible, which allows even those who are not experts in the field of law, it is easy to understand the basic provisions of the regulations. Each section of the book is accompanied by examples and comments, which helps the reader to better absorb the material. In addition, the authors focus on topical issues and possible problems that Member States may face when implementing the regulations. This creates additional interest in the book, as it not only informs but also encourages reflections on the future of European legislation. European Commission Regulation (EU) 677/2011 of 7 July 2011. establishing detailed rules for the implementation of fu” is not just a legal document, but a real find for everyone who wants to better understand the mechanisms of the European Union and its impact on the lives of citizens. If you are looking for information about EU law, how it is applied in practice, or just want to expand your knowledge of international law, this book will be an indispensable assistant for you. Do not miss the opportunity to get acquainted with this important work and discover new horizons in the world of European legislation.