Strategy sprint
Short, fixed length, agreed before we start. We take the question you cannot get past, work it hard, and hand you a decision document: what we recommend, why, what you would be trading away, and what to build first.
It is written so any good builder could pick it up and run with it, including one who is not us. That is how you know the thinking is actually finished.
Good fit if you have a decision stuck in committee, or three plausible directions and no way to choose between them.