This book offers a structured and practical guide to the design, implementation, and continuous improvement of integrated management systems, with a focus on quality, environmental, and occupational health and safety management. It introduces a unified framework covering core processes such as organizational context, planning, documentation, risk management, auditing, and performance evaluation, supported by clear analytical tools. Building on these foundations, the book provides detailed guidance aligned with ISO 9001:2026, ISO 14001:2026, and ISO 45001:2026, translating requirements into practical applications, examples, and system documentation. With its strong emphasis on sustainability, process effectiveness, minimization of climate change and real-world implementation, it is a reliable reference for professionals, auditors, managers, and students working with integrated management systems.