A paid discovery engagement
Bounded work inside one operation: take a recurring objective the organisation already pays for, describe the capabilities it actually needs, inventory which of its own and its providers’ resources could supply them, and write the plan and approval path a governed version would follow. The customer keeps that document whether or not anything is ever deployed.
What it does not proveThat a product exists. It is consulting revenue, tested where the thesis is weakest: whether an operator can describe a real asset in a shared vocabulary. What would turn it into a product is the same work getting faster on the second customer, because the first left a reusable capability class behind. Otherwise this is a services company with a good architecture diagram.