The report analyzes the structural transformation of several selected economies, assessing the evolution of sectoral contributions to gross value added. In general, there is evidence of a transition from heavy industry to service- and knowledge-intensive models, driven by institutional frameworks, technological capabilities, and international integration strategies. The study contrasts relative deindustrialization in advanced economies with systems that preserve manufacturing through active industrial policies and export specialization. In summary, through comparative analysis, the document elucidates how nations are reconfiguring their productive base in the face of automation, globalization, and the intangible economy.