The book can enable a company to make a choice on the benchmarking practice to be employed under a certain circumstance, which will provide business benefits to the organization. For example, internal benchmarking is participative in nature and this participation improves employee morale. Appropriate incentive schemes can be designed to reward employees who can meet benchmarked goals. This improves employee satisfaction and helps in reducing attrition rate. On the other hand external benchmarking can help in implementing truly best practices. Besides, the book is also useful in the sense that practitioners can decide about the relative emphasis that they should attach to different variables while seeking to optimise productivity and defect density.This book is result of research conducted in IT industry which was carried out between 2006 to 2009.