Your concept is the initial idea for a new product, with some sense of how it is going to be implemented. A Concept Review is a discussion where you evaluate different or competing concepts, and decide which ones you're going to invest in and see through to completion.
TERM IN ACTION
“We decided during the concept review that between a delivery smoothie app, a delivery milkshake app, or an all-in-one app, that we would go with the all-in-one option. Now both the smoothie and milkshake users can be happy!”