Engineering Economy is a comprehensive and in-depth exploration of the principles, methods, and applications of economic analysis in engineering decision making. This process is fundamental in guiding decision-making among engineers, enabling them to assess the financial viability of various projects or alternatives In the field of technology, imagine engineers developing a new software solution. They would need to consider development costs, ongoing maintenance, and potential revenue streams. By applying engineering economy principles, they can optimize their decisions to ensure the project's financial feasibility and profitability. In this way, engineering economy serves as a bridge between the technical aspects of engineering solutions and their economic implications. It ensures that projects are not only technically sound but also economically sensible This book Engineering Economy is the result of research and development in the field of engineering economy, and it aims to provide students and professionals with a comprehensive understanding of the subject. The field of engineering economy is constantly evolving, with new techniques and technologies being developed to help engineers make critical decisions that have a significant impact on their projects and organizations. In this book, we have compiled the latest research and developments in the field, making it a valuable resource for students, educators, and practitioners alike. Our goal in designing this book is to provide a clear and practical guide for understanding and applying economic principles in engineering decision making.