Karen Stein spent a decade in sports as assistant general counsel of the PGA Tour. But since 2007, she's worked in a field soaring faster and higher than a Phil Mickelson drive—data centers.

Stein just joined her fourth data center builder, Atlanta-based T5 Data Centers, as general counsel. T5 is one of the fast-growing players in the data center construction market, which is expected to grow from last year's $200 billion to $401 billion in 2032, according to Global Market Insights.