If the decision is primarily about enabling technology, if at all possible, we defer to our tech lead. If the decision is primarily about the user or customer experience, if at all possible, we defer to our product designer. And if the decision is primarily about business viability, we will depend on the product manager collaborating with the relevant stakeholders. The hardest decisions are usually around value, as value is a function of the whole.
Marty Cagan and Chris Jones in Empowered