The collection of instructions which tell a computer how to work is known as software. The branch of computer science which deals with the application of engineering to develop software in a systematic method is referred to as software engineering. It involves the designing and implementation of complex computer programs. It is also concerned with the maintenance of such computer programs. Software engineering is an umbrella field that has various sub-disciplines. The most common of them include software design, software development and software testing. This book attempts to understand the multiple branches that fall under the discipline of software engineering and how such concepts have practical applications. Most of the topics introduced in this book cover new techniques and the applications of this field. It will provide comprehensive knowledge to the readers.