Before fintech darling Ramp was launching multimillion-dollar Super Bowl ads, disrupting time-consuming expense reports, and notching $1 billion in annualized revenue, cofounder Eric Glyman was seeking out tech’s most battled-tested CEOs for some sage business advice.

At Fortune’s Brainstorm Tech conference last week, the 35-year-old entrepreneur shared that instead of turning to executive coaches for wisdom, he prefers candid one-on-one conversations with fellow entrepreneurs.

“I try to kind of go and call people up for an hour at a time,” he told Fortune Editor-in-Chief Alyson Shontell on-stage during a live recording of the Fortune 500: Titans and Disruptors of Industry podcast. “If I can just get their advice on AI or marketing or sales, learn just a little bit, ask them who they’ve learned a lot from in particular fields and just kind of jump from person to person, that’s been very helpful.”

Founded in 2019, Ramp now boasts a $22.5 billion valuation thanks to multiple funding rounds this summer, plus a roster of over 45,000 customers. Under its hyperspeed strategy, Ramp accounts for about 1.5% of the $2 trillion corporate and small-business credit card market in the United States, as Fortune’s Leo Schwartz reported in the latest magazine issue.