This book constitutes the proceedings of the 34th International Conference on Software and Data Engineering, SEDE 2025, held in New Orleans, LA, USA, during October 20–21, 2025.

The 26 full papers presented in these proceedings were carefully reviewed and selected from 42 submissions. These papers focus on a wide range of topics within Software and Data Engineering and are categorized into the following topical sections: Software Engineering and Data Science & Artificial Intelligence.