Américo Rio

This book constitutes the proceedings of the 18th International Conference on the Quality of Information and Communications Technology, QUATIC 2025, held in Lisbon, Portugal, during September 3–5, 2025. The 40 full papers and 12 short papers included in this book were carefully reviewed and selected from 92 submissions. The conference received numerous submissions across a broad range of software quality and engineering topics, organized into nine thematic tracks: Requirements Engineering; Cloud Computing and System Architecture; Verification, Validation, and Testing; Evolution and Maintenance; Process Improvement and Analytics; Security and Privacy; Green and Sustainable Computing; Human, Ethical and Social Aspects; and Quality in the Age of AI. These tracks reflect the conference’s focus on contemporary and emerging technologies and challenges in software quality.