Joan Magretta, M.B.A (Harvard)., Ph. D., is an award-winning contributor to the HBR, where she was the strategy editor (1990s). Prior to that Joan was a partner at Bain & Company. As part of her distinguished career, Joan worked closely with Michael Porter and published number of important books, including her latest books:

What is Strategy: https://amzn.to/2Jp80LV

Understanding Michael Porter: https://amzn.to/39EECMj

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