This two-part volume constitutes the refereed proceedings of the 11th International Conference on Information Management, ICIM 2025, held in London, UK, during March 28–30, 2025. The 53 full papers and 8 short papers presented in these volumes were carefully reviewed and selected from 165 submissions. They were categorized under the topical sections as follows: Part 1: Data-driven intelligent decision-making system and optimization design; Modern integrated information system design and intelligent platform construction based on microservice architecture; Network and information security management; Language model and multimodal language analysis; Machine learning and system modelling. Part 2 : Intelligent Data Analysis Model and Calculation Method in E-commerce; Information management and data analysis in digital manufacturing systems; Big Data Analysis and Risk Management Models in Digital Financial Systems;Data Analysis and Intelligent Technology in Modern Information Management