Problem and audience
Can you name the user and the problem in one sentence?
Is there evidence that the problem already costs time, money or attention?
Core product path
Can a user reach the promised outcome in one coherent session?
Is the data model sufficient for that path?
Are failure states understandable?
Commercial basics
If you charge, can a user understand the offer and complete payment?
Can you support the first customers without building a full enterprise support system?
Launch readiness
Test sign-up, the core action, saved data and the main success message.
Add analytics that answer the product questions you actually have.
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