A parking lot diagram is a way to visually communicate status of work on a product in the context of major blocks of functionality intended to deliver a specific outcome. The parking lot diagram uses boxes to indicate the relationship between the different levels in a product functionality hierarchy, and uses color to indicate the status of significant functionality.
Teams use impact mapping to discuss assumptions, align with organizational objectives and deliver only the things that lead directly to delivering outcomes.
The internal product opportunity assessment is based off questions in Inspired by Marty Cagan. They help product people determine if a product is worth it.