Product managers create a document that encompasses the entire planning phase, called a product requirements document (PRD), collecting all this planning information in one spot. A PRD contains the explanation for why you’re pursuing this opportunity, the scoped problem definition, the success metrics, and more. But you don’t create the PRD in isolation—you’ll work with your team, your boss, and other product stakeholders to make sure the opportunity and requirements are clear and the goals are achievable.