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  • Title
    COO and Group President
  • Affiliation
    Starbucks
  • Age
    57

Brewer is using her retail expertise—she’s the former CEO of Walmart’s Sam’s Club—to tune up Starbucks’ operations. The coffee giant has doubled down on popular cold beverages and its best-in-class rewards program, which now counts 17.2 million members. So far, her initiatives are working: In July, the company reported its fastest sales growth in three years.

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