"Ptak and Smith have broken through common practice to bring common sense to supply chain management."

- Dick Ling, father of S&OP 

"This is probably the most important book to be published with regards to Operations and Supply Chain Management so far this century. "

- Ken Titmus, APICS Master Instructor 

In 20 years time 80% of all company supply chains will be Demand Driven and this book, by the co-founders of the Demand Driven Institute, is the touch-stone / go to reference.

- Simon Eagle, author of Demand Driven Supply Chain Management 

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