Terms on validation.

The simplest version of your product that delivers core value and lets you test key assumptions with real users.

A deliberate change in strategy, product, market, or model, made to find a better path while keeping what you've learned.

The point where you've built something a specific market genuinely wants, shown by strong demand, retention, and organic pull.

A framework for sizing your market: total demand (TAM), the slice you can serve (SAM), and the share you can realistically win (SOM).