The International Conference on Information Technology and Quantitative Management (ITQM), established by International Academy of ITQM (IAITQM), is a global forum for exchanging research findings and case studies that bridge the latest information technology and quantitative management techniques. It explores how the use of information technology to improve quantitative management techniques and how the development of management tools can reshape the development of information technology. This conference is focused on exploring innovations, controversies, and challenges facing our scientific community today. It is an opportunity for us to think about where we are today and where we are going. The First International Conference ITQM 2013 took place in Suzhou (China). The following ones were held at Moscow (Russia), Rio de Janeiro (Brazil), Asan (Korea), New Delhi (India), Omaha (USA) and Granada (Spain). The theme of ITQM 2020-2021 is "Developing Global Digital Economy after COVID-19". Prospective authors are invited to contribute high-quality papers to ITQM 2020-2021.