Main Takeaways: You don't need to start in a given domain as the biggest expert in that domain - you just need to lead with curiosity. You can be effective by having good core PM skills and remaining focused on a key set of repeatable questions and processes focused on understanding the business space &, most crucially, who are the customers and what are their pain points & needs. You also have to start by understanding the org you're moving into - especially who are the key domain experts to partner with early and what is the org's understanding of Product Management.