PMF Survey
PMF Survey is the "Sean Ellis test" for product-market fit. You ask users "How would you feel if you could no longer use this product?" If 40% or more say "very disappointed," you've likely found product-market fit. Below 40% means you need to keep iterating.
Definition
The "Sean Ellis test" for product-market fit. You ask users "How would you feel if you could no longer use this product?" If 40% or more say "very disappointed," you've likely found product-market fit. Below 40% means you need to keep iterating.
Related Terms
More Business & Contracting Terms
MVP - Minimum Viable Product
The simplest version of your product that still solves the core problem. Ship fast, learn from real users, then improve. Don't build everything at once.
POC - Proof of Concept
A small test to prove an idea actually works before investing serious time or money. It's not a product—it's evidence that building the product makes sense.
Prototype
A working model of your product used for testing and feedback. It doesn't need to be pretty or complete—it needs to let people interact with your idea.
Wireframe
A basic sketch showing the layout and structure of a page without any design polish. Think blueprint, not finished building. It's about where things go, not how they look.
Mockup
A high-fidelity visual design showing exactly how the final product will look. Unlike wireframes, mockups include colors, typography, and real content.