Dear Colleague, It is our pleasure to invite you to participate at ISCO2024 https://eventos.ull.es/isco-2024 It is the coming edition of a series of meetings known as "International Symposium on Combinatorial Optimization" (ISCO). Previous editions were in Tunisia (2010), Athens (2012), Lisbon (2014), Vietri (2016), Marrakesh (2018), Montreal (2020) and Paris (2022). Each edition consists of a 3-day international conference on Combinatorial Optimization preceded by a 2-day doctoral school. The coming 3-day conference will run from *22 to 24 May 2024*, preceded by a 2-day school on 20 and 21 May 2024. The venue will be the School of Mathematics at University of La Laguna (in La Laguna, Tenerife, Canary Islands, Spain). The aim of the ISCO2024 organizers is to create the best possible atmosphere in Tenerife to facilitate interaction between participants, selecting innovative submissions on all areas of Combinatorial Optimization to create an interesting scientific program, enriched with plenary talks by top motivational invited speakers, and complemented with attractive social activities. The NEW deadline for the "extended abstract" submission is *29 February 2024*. Please, consider coming to ISCO2024. Kind regards, --A. Basu, R. Mahjoub, J.J.Salazar--