Distributed applications and interoperable systems : 23rd IFIP WG 6.1 international conference DAIS 2023 : held as part of the 18th international federated conference on distributed computing techniques DisCoTec 2023 Lisbon Portugal June 19 23 2023 : proceedings This book constitutes the refereed proceedings of the 23rd IFIP WG 6.1 International Conference on Distributed Applications and Interoperable Systems DAIS 2023 held in Lisbon Portugal during June 19 23 2023 as part of the 18th International Federated Conference on Distributed Computing Techniques DisCoTec 2023. The 7 full papers presented in this book were carefully reviewed and selected from 13 submissions. The papers cover the following topics: distributed algorithms and systems; data management; and distributed architectures