This thesis investigates the implementation of circular economy strategies and carbon footprint reduction practices within Leonardo S.p.A., an international leader in the Aerospace, Defence, and Security sector, with a specific focus on industrial packaging management. In recent years, increasing regulatory pressure and growing awareness of environmental sustainability have driven companies to move beyond traditional linear production models toward more regenerative and resource-efficient systems. Within this context, the circular economy represents a strategic lever to reduce environmental impacts, improve logistics efficiency, and enhance corporate competitiveness. The study conducts a comparative analysis between two distinct business contexts within Leonardo S.p.A.: the Automation Business Unit and the Aircraft Business Unit.