Originated in Malaysia, enhanced under the bilateral collaboration between Malaysia and Japan, iDECON is now expanding to the collaboration among countries in East and South Asia. JSME iDECON/MS 2021 will be held from September 3 rd to 4 th, to provide an international forum for researchers, engineers, industrial practitioners. A wide variety of topics related to design, concurrent engineering and manufacturing systems are welcome in iDECON/MS to facilitate sharing recent research results and trends among the participants and to explore the future directions.