An act of discovering unknown thing or simply a need to understand something based on quantitative or qualitative analysis, or a mix of both may vary from controlled experiments to quasi-experiments or pre-experimental designs. The book content depicts the importance of the research and its contribution to specific field of software engineering and also try to narrate at what extent this book supported the development of modeling for facilitating software industries as well educational society. Along with conceptual the experimental studies used to play an important role in the evolution and regular development of new tools, techniques and framework for improving the quality of software. The experimental study for reliability of requirement allows us to build a skeleton of concrete knowledge for quality software delivery. That is why this book may play an important role for the coming researcher in the field of software industry for making new software reliable.