Jennifer Fleiss just went from running her own company to joining the world’s largest company.

Fleiss, a co-founder of clothing rental service Rent the Runway, will oversee Code Eight, the first portfolio company in Walmart Stores’ (wmt, +0.39%) newly launched incubator, Store No. 8.

While the move may seem at surprising at first glance, Fleiss says the timing of the opportunity, announced last week, could not have been more perfect. “Rent the Runway was my first child. I had a deep emotional connection to the business, always have,” she tells Fortune. “But I was at a place where I was ready to do the next thing.” Once the company she founded has reached profitability, she felt free to move on, she says.

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Marc Lore, CEO of Walmart’s e-commerce operations and the mastermind behind Store No. 8, reached out to Fleiss personally about the role, she says. “At…