Most of the companies are opting for Automated Software Testing (AST) to achieve benefits such as quality improvement, time to market and less human effort, but various studies show that achieving this is not easy. In this book , we explored and classified different contributions done by researchers in the area of Automated Software testing.Later, we have gathered the empirical evidence regarding different benefits and challenges of AST, that are found in research literature and finally, web survey is conducted to find whether the benefits and challenges of AST reported in the literature are prevalent in software industry.