Alexandra Zatarain is the co-founder and VP of brand and marketing of Eight Sleep, the world’s first sleep fitness company. A marketer and brand-builder, Zatarain has built the Eight Sleep brand and scaled the company’s revenue from $0 to current state. Eight Sleep was named one of Fast Company’s Most Innovative Companies of 2018 and was recognized two years in a row as a TIME Best Invention of the Year. In this conversation with Stanford adjunct lecturer Ravi Belani, Zatarain digs deep into the process of finding product-market fit, using examples from Eight Sleep’s struggles and successes.