Software Testing and Continuous Quality Improvement, Second Edition, illustrates a quality framework for software testing in traditional structured and unstructured environments. Section I reviews modern QA principles and best practices. Section II examines the waterfall development methodology. The next section contrasts waterfall development methodology with the rapid application spiral environment. Section IV discusses fundamental challenges of maintaining and improving existing systems. Section V contains a history of software testing, previews future testing tools, and guides the choosing of proper tools for various environments. It provides examples of some of the most popular products, and offers a detailed methodology for evaluating.