Bumble founder Whitney Wolfe Herd knows: The smallest feature can make or break your product. The challenge is recognizing the impact of that feature – and making sure it’s actually positive. This is what Wolfe Herd tapped into when she founded a dating app that required a whole new way of communication. She has become a master of understanding what her users want, and then making the small changes to Bumble that help them achieve their goals. While small changes typically lead to incremental improvements, every so often the impact is exponential. With cameo appearances by Steve Spohn (AbleGamer), and Marissa Mayer (Google, Yahoo).

If you want your company to truly scale, you first have to do things that don’t scale. Handcraft the core experience. Serve your customers one by one, until you know exactly what they want. That’s what Brian Chesky did in the early days as co-founder and CEO of Airbnb. He shares their route to crafting what he calls an “11-star experience.”