This monograph presents research findings from Poland and Greece, showcasing its originality through an interdisciplinary approach that explores the enterprise sector and financial institutions, highlighting development opportunities and threats. The book is structured into three main parts with thirteen chapters. The first part, titled "The Macroeconomic Factors of Businesses Development," analyzes the conditions for implementing a capital market union in relation to the external environment and the European Union, discusses the significance of gold as a safe haven asset, and compares two taxes impacting corporations, particularly financial institutions. The second part, "The Development of Financial Institutions," investigates the link between economic growth and internet infrastructure in selected countries, assesses the effects of extreme dividend policies on Greek banks, examines changes in the NPL (Non-Performing Loans) ratio of non-financial corporations in Poland, explores the relationship between market shares and financial results in the insurance sector, and addresses the importance of information selection in decision-making for insurance companies. The third part, "The Development of Enterprises," focuses on the influence of business activities on competition, evaluates the orchestrator's ability to create value in Global Business Networks (GBN), discusses the advantages of integrated IT systems, identifies
