With great pleasure and privilege we invite you to attend the 9th International Conference on Algorithms, Computing and Systems (ICACS 2025) which will take place in Bangkok, Thailand during December 12-14, 2025. ICACS 2025 plans to address latest research on algorithms, computing and systems and their applications in several multidisciplinary areas, including algorithms design and optimization, intelligent computing, software engineering, data theory and analysis, software and information security, computer theory, etc. It aims to provide an international forum for presentation of original research results, as well as to promote exchange and dissemination of innovative and practical development experiences and best practices in areas relevant to algorithms, computing and systems. ICACS 2025 will bring prominent scientist from all over the world together, to serve as a gate and help share, promote the work and research and transmit knowledge and new advances in Algorithms, Computing and Systems. The event aims to offer all participants an invaluable professional and personal experience. We are looking forward to seeing you in Bangkok, Thailand!