Dr. Chang’s principal contribution to the semiconductor industry was the development and implementation of the dedicated foundry business model. At the time of TSMC’s establishment in 1987, semiconductor companies commonly integrated chip design and manufacturing within the same organisation. The foundry model separated these functions, allowing fabless semiconductor companies to develop and market their own designs while relying on specialised manufacturers for fabrication. Under Dr. Chang’s leadership, TSMC developed manufacturing capabilities and an organisational structure centred on serving a broad customer base, contributing to the expansion of the global fabless semiconductor sector and the reorganisation of the industry’s supply chain. His earlier work at Texas Instruments included senior management of semiconductor operations and the development of large-scale semiconductor manufacturing capabilities. At the Industrial Technology Research Institute, he also contributed to strengthening Taiwan’s institutional and technological foundation for semiconductor development, from which TSMC subsequently emerged. His professional writings and public lectures have addressed technology management, semiconductor strategy, industrial development, and global technology supply chains. Through sustained work spanning semiconductor engineering, industrial management, and technology institution building, Dr. Chang has contributed to the development of modern semiconductor manufacturing and to the evolution of the global electronics industry.