Warm welcome to the official website of the 2021 4th International Conference on Computers in Management and Business (ICCMB2021). The Conference will be held in Singapore during January 30 - February 1, 2021, co-located with ICSCM 2021 (2021 2nd International Conference on Supply Chain Management). The main purpose of ICCMB2021 is to provide an international platform for presenting and publishing the latest scientific research outcomes related to the topics of Computers in Business and Management. This conference offers good opportunities for the delegates to exchange new ideas, and to establish research and/or business links, as well as to build global partnership for potential collaboration. We sincerely hope that the conference will help advance knowledge in relevant scientific and academic fields.