This document discusses how technologies like big data and social media are changing product management. It provides examples of how companies like Vitaminwater, eBay, and Netflix use big data and social media to test new products and features. The key points are that these new tools allow for faster and cheaper A/B testing of new products, greater customer engagement during development, and the ability to analyze large amounts of user data to identify trends and spot new opportunities. The future will involve more customer involvement in development through signaling and personal data, and combining behavioral and attribute data from multiple sources.