1) Michael Wolfe discusses how he and his co-founders validated the idea for their B2B startup that developed data loss prevention software. They conducted customer interviews to understand problems and gain feedback on prototypes, learning that large regulated companies cared most about preventing loss of consumer data.
2) Based on this validation, they focused their minimum viable product on blocking outbound email of consumer data for large customers. Their first customer was Bank of America.
3) The startup continued learning customer needs through further development and interviews. This allowed them to expand their product capabilities and customer base, growing revenue from $500K to $50M in just a few years before potentially exiting.