This book constitutes the refereed proceedings of the 25th IFIP WG 6.1 International Conference on Coordination Models and Language, COORDINATION 2023, held in Lisbon, Portugal, in June 2023, as part of the 18th International Federated Conference on Distributed Computing Techniques, DisCoTec 2023. The 12 regular papers and 2 short paper presented in this book were carefully reviewed and selected from 27 submissions. The papers deal with the following topics: Collective Adaptive Systems and Aggregate Computing; Cyber-Physical Systems; Verification and Testing; Languages and Processes; and Run-Time Changes.

This book constitutes the thoroughly revised selected papers from the 16th International Conference on Formal Aspects of Component Software, FACS 2019, held in Amsterdam, The Netherlands, in October 2019. The 9 full papers presented together with 9 full papers and 3 short papers as well as 2 other papers were carefully reviewed and selected from 27 submissions. FACS 2019 is concerned with how formal methods can be used to make component-based and service-oriented software development succeed. Formal methods have provided a foundation for component-based software by successfully addressing challenging issues such as mathematical models for components, composition and adaptation, or rigorous approaches to verification, deployment, testing, and certification.