This book on software testing, which is currently in its second edition and has undergone many revisions and updates, aims to be much more thorough. The second edition continues to address the topic in a way that offers insight into the practical aspects of software testing and the most recent technology advancements in the industry, but with a number of important enhancements. These modifications aim to give a thorough comprehension of the important ideas. The book sets out the fundamental ideas of quality and software testing from the beginning on. The book then goes into great detail about the many aspects of software verification and validation, testing approaches for both static and dynamic software, structured group exams, data flow and control flow, unit testing, integration testing, system testing, and acceptance testing. The importance of the cost-benefit analysis of testing procedures, test automation, object-oriented systems, client-server applications, and web-based applications is also emphasised in the text. Object-oriented testing and commercial off-the-shelf (COTS) software testing concepts have both been thoroughly discussed. The book also explains the fundamental ideas behind accessibility and usability testing. The book also covers careers in software testing. The book is intended for the undergraduate and postgraduate students of computer science and engineering for a course in software testing.