Bossa Nova pioneered automated on-shelf inventory management, building robots and cloud AI that scanned store aisles and reported out-of-stocks in 600 Walmart Supercenters. Founded by robotics entrepreneur Sarjoun Skaff, the company grew that seven-year retail effort into a 230-person operation with more than $90 million in revenue. Today, Bossa Nova shares the hard-won lessons from that work with startups and new entrepreneurs.