The Lean Startup

How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses

Eric Ries

20 min read
1m 1s intro

Brief summary

Most startups fail by building products nobody wants. The Lean Startup method treats new ventures like scientific experiments, using a Build-Measure-Learn feedback loop to turn ideas into sustainable businesses.

Who it's for

This is for anyone creating a new product or business under uncertain conditions, from startup founders to managers in large corporations.

The Lean Startup

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Using a Disciplined Process to Build a Successful Business

Many believe starting a company only requires a great idea and hard work, assuming that if a product is good enough, customers will naturally find it. However, most new ventures fail, even those with talented teams and promising technology. Success is not simply a matter of vision or timing; it is the result of a specific process that can be learned and taught. A startup, defined as an institution creating new products under extreme uncertainty, cannot rely on traditional management tools like detailed planning, as these methods fail when the customer and product are still unknown. Conversely, an approach that avoids management entirely leads to chaos and wasted effort.

The Lean Startup methodology solves this by applying principles from lean manufacturing to innovation. It focuses on reducing waste—defined as time and effort spent building products nobody wants—through a scientific method called validated learning. In this framework, every product and feature is an experiment designed to discover how to build a sustainable business. Instead of rigid, rocket-launch-style planning, this approach is like driving a car: you have a clear destination (the vision), but you use the steering wheel (constant feedback) to make continuous adjustments.

The core of this method is the Build-Measure-Learn feedback loop. The goal is to turn ideas into a basic version of a product, known as a minimum viable product (MVP), as quickly as possible. By getting this early version to customers, a team can measure how people actually use it. This data provides the evidence needed to decide whether to stay the course or make a fundamental change in strategy, a move known as a pivot. Accountability is maintained through innovation accounting, which tracks specific metrics showing real progress toward a sustainable business. By focusing on these practical details, entrepreneurship transforms from a matter of luck into a rigorous professional discipline.

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About the author

Eric Ries

Eric Ries is an American entrepreneur and author known for creating the Lean Startup methodology, a global movement that applies principles like rapid experimentation and validated learning to the process of innovation. He has founded several startups, including IMVU where he was CTO, and has advised a wide range of companies from startups to large corporations like GE on business and product strategy. Ries is also the founder and Executive Chairman of the Long-Term Stock Exchange (LTSE), which is designed to support companies focused on long-term growth.

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