What is an innovation funnel?
An innovation funnel is a process used by organizations to systematically capture ideas which are then filtered through a funnel. It is usually the product manager who ultimately decides which ideas make it through and are prioritized, if at all, and how for further development. Simply put, it is a method to capture and filter innovative and viable ideas for the product manager's consideration and is part of the product discovery process.
The innovation funnel is a part of the Ideation step of the product management process.