How to validate an MVP idea before building in 2026?

1. Define the core problem hypothesis and target user segment before coding. 2. Run 5–10 user interviews to assess problem severity and willingness to pay. 3. Create a no-code or Figma prototype to test the proposed solution flow. 4. Measure engagement through a landing page and waitlist - a 5–10% conversion rate signals positive interest. 5. Only begin development after securing at least 3 letters of intent or pre-orders are secured.