How do you make changes to a product that millions of customers are already using? A product that your internal stakeholders like policy and ops depend on working a certain way? Product managing a mature product is a very different beast from building one from scratch. It requires patience, perseverance and partnerships. In her talk, Parul Goel, a Product Leader at PayPal discusses unique challenges evolving a mature product poses, and shares a few practical lessons she has learned to get ahead of them.