A wedge is a subset of your value that'll be so compelling it'll persuade customers to take a chance on you. Nailing the wedge solves your biggest problem and bridges the gap between nobody uses this thing and somebody who likes it. It gets your foot in the door so you can build some trust with a customer which will then make it easier to upsell them to your main product. What's a great wedge actually look like? How do you balance and message the small value of the wedge with the big value of your eventual product? And how small is too small for the initial wedge, both from a product perspective and market perspective?