We must learn what customers really want, not what they say they want or what we think they should want.

Progress in manufacturing is measured by the production of high quality goods. The unit of progress for Lean Startups is validated learning-a rigorous method for demonstrating progress when one is embedded in the soil of extreme uncertainty.

At IMVU, the cost of customer acquisition through our five-dollar-a-day AdWords campaign was less than twenty-five cents. Our revenue from those same customers was more than a dollar.

At IMVU, we opened up our board meetings to the whole company.

The Lean Startup has evolved into a movement that is having a significant impact on how companies are built, funded and scaled.

If we do not know who the customer is, we do not know what quality is.

Reading is good, action is better.