This textbook provides an in-depth exploration of the economic principles underlying insurance companies and their connection to managerial issues. Balancing academic rigor with practical relevance, it covers the competitive landscape and operational management of the insurance business. Topics include an overview of industry fundamentals, regulatory frameworks, and insurance products across various lines. It delves into pricing and reserving for life and non-life insurance, reinsurance, and business models, highlighting organizational structures and key processes like underwriting, claims management, and marketing. Financial aspects are also addressed, including IFRS principles, Solvency II calculations, performance metrics, and management accounting. This resource is designed for students, professionals, brokers, bankers, and consultants seeking to deepen their understanding of the insurance industry.