In order for software developers to apply engineering rigor in the software development process, they must first have a clear idea as to what is happening in the various stages of software development. This book provides a foundation for engineered software with topics that span all aspects of the software lifecycle from requirements to maintenance. These topics are woven out of the cloth of software measurement and the methodology enforces engineering discipline analogous to the construction of buildings or the manufacture of precision devices on the software development process. This book establishes the foundation for a true engineering discipline in the software development process.