Nonfunctional Requirements in Mobile Application Development is an empirical study of how non-functional requirements get the attention of software engineers during the development of mobile apps, especially m-commerce apps, in relation to functional apps. The book empirically analyzes the contribution of non-functional requirements to such project parameters as cost, time, and quality. Such parameters are of prime interest as they determine the survival of organizations in highly dynamic environments. The impact of non-functional requirements on project success is analyzed through surveys and case studies, both individually and relative to each other. Sources for data collection include industry, academia, and the literature. The book also empirically studies the impact of non-functional requirements on overall business success of both the software development firm and the software procuring firm. Project success is examined to determine if it leads to business success. The book places non-functional requirements on par with functional requirements. This work is unique in the research literature as it is an empirical investigation of non-functional requirements on both project and business levels. The book can guide both computer scientists and business managers in devising theoretical and technical solutions for software release planning to achieve business success.