She guides everything from brand strategy to advertising for all the colas, including Wild Cherry Pepsi and Pepsi-Cola (the U.S.' No. 2 soft drink).
Pre-Ms. Lacey, few of the company's colas were setting the world on fire. Now, they're rebounding thanks in part to the November launch of lemon-flavor Pepsi Twist. Unlike many marketers fearful that extensions will dilute their brands, Ms. Lacey, 36, is all for them.
"I'd worked in new products almost my entire time with PepsiCo," she says, "so it doesn't seem to me-in a world of increasing choices-that to line-extend and to offer new varieties should be risky."
A marathoner (New York last year in 4 hours, 15 minutes), Ms. Lacey was Pepsi-Cola's director of sports marketing for 2 1/2 years before taking on colas.
She was appointed to centralize sports marketing among the company's beverages.
She expanded Mountain Dew's Nascar sponsorship from a regional to a national effort, launched the first advertising with Major League Baseball, and underscored Pepsi-Cola's baseball sponsorship by signing stars Ken Griffey Jr. and Sammy Sosa to ads and promotions.