Lean startup
Definition
The Lean Startup is a product development methodology created by Eric Ries that applies lean thinking to new ventures — using rapid Build-Measure-Learn feedback loops, validated learning, and minimum viable products to reduce waste and discover what customers actually want.
Eric Ries published "The Lean Startup" in 2011, drawing on Steve Blank's Customer Development methodology and lean manufacturing principles. The central insight: most startups fail not because of bad execution, but because they build something nobody wants. The Lean Startup is designed to prevent this by treating product development as a series of experiments.
The Build-Measure-Learn loop:
- Build — turn assumptions into a testable product (ideally an MVP)
- Measure — gather data on how real customers use it
- Learn — determine whether assumptions were validated or invalidated
- Pivot or persevere — if validated, invest more; if not, change direction
Key concepts:
- Validated learning: Progress isn't features shipped — it's assumptions validated by real customer behavior.
- Innovation accounting: Measuring startup progress with metrics that matter (activation, retention, revenue) rather than vanity metrics (pageviews, app downloads).
- Pivot: A structured course correction that tests a new hypothesis about the product, market, or business model.
- Minimum viable product (MVP): The simplest version of a product that lets you test your most important assumption.
Lean Startup vs. agile: Lean Startup and agile aren't the same thing, but they complement each other. Lean Startup is about what to build (the strategic layer). Agile is about how to build it (the execution layer). Most successful startups run both simultaneously.
The physical whiteboard is central to Lean Startup workshops — teams sketch business models, map assumptions, and design experiments. BoardSnap AI captures that work and turns it into structured action items.
Examples
- Startup tests a landing page for a product that doesn't exist yet — measures signups to validate demand before writing code
- Team identifies their riskiest assumption: 'users will share their location with the app' — builds a one-day test to validate it
- Pivot from B2C to B2B after six months of data showing enterprise users convert but consumer users churn
- Innovation accounting dashboard shows weekly retention improving from 15% to 38% over three sprints — persevere signal
- Workshop uses Lean Canvas to map business model assumptions before building anything
Related terms
Snap a lean startup. Ship its actions.
BoardSnap turns any whiteboard — including this one — into a summary and action plan.