Lifecycle management is a research field and methodological approach concerned with the comprehensive examination and optimization of a product, system, or process across its entire temporal existence. It investigates the interconnected phases from initial conception and development through operation, maintenance, and eventual decommissioning or disposal, analyzing performance, costs, risks, and impacts (technical, economic, environmental, social). Key characteristics include its holistic, integrated perspective and emphasis on informed decision-making over time. Its significance lies in facilitating enhanced efficiency, sustainability, safety, and economic viability by considering long-term implications and interdependencies among lifecycle stages.