Start from a use
Describe a person, a situation and an expected outcome. This precision helps separate the essential features from those that can wait. An MVP can be very limited and still deliver a complete service.
List the assumptions
Does the need exist? Does the user understand the journey? Is the data accessible? Each uncertainty may call for a different answer: interview, prototype or technical experiment.
Define what’s next before launch
Choose the observations that will guide the next decision. A sign-up list doesn’t say the same thing as repeated use. Plan time to gather feedback and adjust the scope.