2025 5th International Conference on Computer Communication and Information Systems (CCCIS 2025) will be held in Hong Kong, China during February 28-March 2, 2025，sponsored by Hong Kong Chu Hai College, and supported by Sensors and Systems Society of Singapore. CCCIS is a serial event that addressing researchers and industries from all areas of communication software and networks. It provides an international forum for the exchange between those fields, to present advances in the state of the art, identify emerging research topics, and together define the future of these exciting research domains.