This book deals with the anatomy, diagnosis and inside story of ISO 9001:2015 — which leads to its rather self-explanatory name. Just as one dissects the anatomy of a living organism, the book dives into and separates each clause, sub-clause and sub-sub-clause, before focusing on the diagnosis of each. It also seeks to tell the readers about the inside story of ISO 9001:2015 which will be helpful for industries, organisations, entrepreneurs, proprietors, auditors (internal and external), consultants working in this area of ISO and the people at large who want to gain in-depth knowledge about ISO 9001:2015. This book has been written with an emphasis on the requirement in subject matter. It is hoped that the book will also help one to acquire a working knowledge of ISO 9001:2015.