Drew Houston, co-founder and CEO of Dropbox, discusses the startup's journey, emphasizing the importance of launching early and gathering user feedback to avoid building a product that no one wants. Despite a competitive landscape and initial marketing failures, Dropbox leveraged word-of-mouth and a referral program to achieve rapid user growth, reaching 4 million users within 15 months of its launch. His lessons highlight the value of focusing on product-market fit, simplicity, and authentic communication with users.