Software engineering is a discipline that combines computer science, engineering principles and methodologies, and management techniques to design, develop, and maintain software products. It is a relatively new field that has been growing in importance over the past six decades, driven by the rapid evolution of computing technologies and the increasing complexity of software systems.This book entitled “Software Engineering” is a comprehensive guide that covers fundamental and advanced concepts in software engineering. It is designed to serve as a reference book for undergraduate-level engineering courses. The book aims to provide software developers and system engineers with a clear understanding of how their skills and expertise can support and complement each other. The book presents various software engineering notions in a systematic and organized manner, making it easy for novice readers to understand the concepts. It covers a wide range of topics, including software design, development, testing, and maintenance. Additionally, the book provides insights into various software development methodologies, software project management, and quality assurance