The book is a collection of high-quality papers presented at the International Conference on Soft Computing: Theories and Applications (SoCTA 2025), held at National Institute of Technology Jalandhar, India, during 27-29 December 2025. This book focuses on soft computing and how it can be applied to solve real-world problems arising in various domains, ranging from medicine and healthcare, to supply chain management, image processing, and cryptanalysis. The book offers valuable insights into soft computing for teachers and researchers alike; the book inspires further research in this dynamic field.