The focus of this e-book is on supply chain auditing, and particularly methods developed for the analysis of the "health" of value streams. Supply chain auditing goes beyond benchmarking and directly confronts the implementation of panaceas (such as lean thinking) without full justification of how well they suit the given scenario. Rather supply chain auditing focuses on a range of operational questions covered in this e-book. In total, six papers have been selected for inclusion in the e-book. The approaches presented within this e-book provide mechanisms to serve the twin goals of collecting highly valid empirical research data and practitioner guidance based upon their current supply chain status. Two common messages can be seen to permeate throughout; triangulation by the use multiple methods and a team based approach inclusive of the practitioners being audited. By following these principles, it is possible to deliver benefits to both academe and industry.