Proceedings of the 15th International Conference on Cloud Computing and Services Science Acronym: CLOSER 2025 Event held on: April 1-3, 2025, in Porto, Portugal Editors: Valeria Cardellini 1 and Maarten van Steen 2 Affiliations: 1 University of Rome Tor Vergata, Italy , 2 University of Twente, Netherlands ISBN: 978-989-758-747-4