We can say that today's modern economic system is facing serious ecological challenges characterized by resource depletion, biodiversity loss and the climate crisis. These complications, arising from the traditional linear economic formula of “produce-consume-dispose”, make it essential to fundamentally restructure our economic activities. This article provides a comprehensive and extensive analysis of the strategic importance of design methodology, particularly approaches such as systemic design and eco-design, in the ecological transition of the economic model. The main aim of the article is to substantiate that design is not only an aesthetic function, but also a foundational methodology that explores the regenerative and cyclical logic of the economic system. The article explores the systematic design approach, which is a unity of design thinking and systems thinking, through its Holistic Diagnosis and process. The study integrates the social ideas of Victor Papanek, the Cradle to Cradle principles and Kate Raworth's “Doughnut Economics” framework. Within the framework of Azerbaijan's 2030 National Priorities, the goals of transforming into a green growth country are assessed from a design perspective. The analysis shows that over 80% of the environmental impact of a product and its services is primarily determined by decisions made during the design phase. The study investigates the constraints faced by small and medium-sized enterprises in the green transformation and also puts forward concrete economic-methodological proposals for systematic integration. The findings of the study provide a significant and micro-practical basis for state policy, as well as for industrial strategic approaches and educational curricula.