- Minimum Viable Product (MVP)
- The simplest version of a product that delivers enough value to attract early users and generate actionable learning about whether the core hypothesis is correct.
- Problem Hypothesis
- A falsifiable statement describing the specific problem a target user has and the assumption that your solution will meaningfully address it.
- User Story
- A short, structured description of a feature written from the end user's perspective: 'As a [USER], I want to [ACTION] so that [OUTCOME].'
- Validated Learning
- Evidence gathered from real user behavior β not opinions or surveys alone β that confirms or refutes a core product assumption.
- Feature Scope
- The explicit list of capabilities included in the MVP build, alongside an equally explicit list of what is deliberately excluded.
- Success Metric
- A quantified, time-bound measurement that determines whether the MVP has validated its hypothesis β for example, 40% of users completing a core action within 7 days.
- Pivot
- A structured course correction in which the team changes one or more core assumptions about the product, market, or model based on MVP learning.
- Build-Measure-Learn Loop
- The iterative cycle at the heart of lean product development: build the smallest testable version, measure real user behavior, and learn whether to continue, change, or stop.
- Acceptance Criteria
- Specific, testable conditions that a feature or user story must satisfy before it is considered complete and ready for user testing.
- Go/No-Go Threshold
- A pre-agreed metric value or qualitative condition that determines whether the team proceeds to a full build, pivots, or stops after the MVP experiment.