The Tenth Montreal IPSW took place on August 13-27, 2020, and was jointly organized by the Centre de recherches mathématiques (CRM) and the Institute for Data Valorization (IVADO). The pandemic started as we were preparing the workshop and the Organizing Committee (consisting of Margarida Carvalho, Fabrizio Gotti, Nancy Laramée, Odile Marcotte, Jean-Marc Rousseau, Juliana Shulz, and Guy Wolf) decided to hold a virtual workshop. More than 60 persons registered for the workshop and studied four problems, submitted respectively by Air Canada, Desjardins, Hydro-Québec, and IATA. I thank our industrial partners, the team coordinators (Philippe Langlais, Sébastien Gambs, Yi Yang, Huaxiong Huang, and Denis Larocque), as well as the IVADO advisors whose collaboration was crucial for organizing this virtual workshop.