Eli Schragenheim is a well-known international management educator, author and consultant active in various fields of management. He worked with a huge variety of organizations all over the world, including public-sector organizations, industrial, high-tech and start-ups. Since he had joined Dr. Eliyahu M. Goldratt, the famous creator of the Theory of Constraints (TOC) in 1985, Eli Schragenheim had taught, spoke at conferences, and consulted all over the globe. Eli Schragenheim is the author of several books on various aspects of management. His last book, Throughput Economics – Making Good Management Decisions, together with Henry Camp and Rocco Surace, was published in July 2019. Eli Schragenheim first book Management Dilemmas (1998) showed a variety of problematic situations in management and the rigorous analysis leading to the right solution. Next he collaborated with William H. Dettmer in writing Manufacturing at Warp Speed. In this book the new concept of Simplified-DBR, now a key concept in production planning according to TOC, was introduced. He collaborated with Carol A. Ptak on ERP, Tools, Techniques, and Applications for Integrating the Supply Chain, and with Dr. Goldratt and Carol Ptak on Necessary but Not Sufficient. In 2009 his book Supply Chain Management at Warp Speed, with William H. Dettmer and Wayne Patterson was published. In March 2015, Eli has opened a blog, now containing more than 140 articles on various topics in TOC that everybody can access.