Preface

This volume contains the papers presented at COORDINATION 2021, the 23rd International Conference on Coordination Models and Languages, organized online by the University of Malta in Valletta during June 14–18, 2021, as part the federated DisCoTec conference. The COORDINATION conference provides a well-established forum for the growing community of researchers interested in coordination models and languages, architectures, verification, and implementation techniques necessary to cope with the complexity induced by the demands of today’s software development. For the third year in a row, COORDINATION has called for tool papers describing experience reports, technological artefacts, and innovative prototypes, as well as educational tools in the scope of the research topics of the conference. Tool papers were selected according to the combination of an extended abstract and a short video demonstration, after which full papers were produced to be included in these proceedings following a light-weight review. In addition, seeking to further reinforce the practical applicability aspects of the COORDINATION community research, we have explicitly included among the topics of interest the industry-led efforts in coordination and industrial case studies. The Program Committee of COORDINATION 2021 comprised 32 researchers from 14 countries. We received 16 full paper submissions, 7 short paper submissions, and 8 tool paper submissions. Each paper was evaluated by three reviewers and this process was supplemented by an in-depth discussion phase during which the merits of all the papers were considered. The contributions published in this volume were selected according to their quality, originality, clarity, and relevance. The final program comprises 8 full papers, 2 short papers, and 7 tool papers. The program also included an invited tutorial and an invited talk. The invited talk was given by Mira Mezini from TU Darmstadt, Germany. A short abstract of this talk is included in this volume under the title “Let it Flow: Reactive Computations for Consistent-by-Design Distributed Applications”.