The two-volume set LNCS 15226 and 15227 constitutes the refereed proceedings of the 24th International Conference on Embedded Computer Systems: Architectures, Modeling, and Simulation, SAMOS 2024, held in Samos, Greece, during June 29-July 4, 2024. The 24 full papers, 10 invited full papers and 4 poster papers included in the proceedings were carefully reviewed and selected from 57 submissions. They deal with embedded computer systems focusing on their applications; architectures; and underlying processors, as well as methods created to automate their design.