The Lean Startup

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

Eric Ries

24 min read
1m 18s 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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Introduction: A New Approach to Startups

The traditional story of entrepreneurship is often told as a myth of individual genius and tireless effort. We are led to believe that if a brilliant founder works hard enough and has a great product, success is inevitable. However, Eric Ries discovered through his own early failures that even the most promising ideas can collapse if they lack a functional process. His first company had a talented team and innovative technology, yet it failed because they did not understand how to turn their insights into a sustainable business.

The common belief that startup success is the result of good genes or being in the right place at the right time is misleading. Instead, success can be engineered by following a specific process that treats entrepreneurship as a form of management. Because startups operate under conditions of extreme uncertainty, they cannot rely on the long-term forecasting or rigid planning used by large companies. When entrepreneurs try to apply those old management tools to a new venture, they often find themselves building products that nobody actually wants.

At his next company, IMVU, Ries and his cofounders experimented with a radical new framework called the Lean Startup. Instead of spending years perfecting a product in isolation, they released an early version that was functional but unpolished to see how real customers would react. They shifted their focus from simply making things to *validated learning*, which is the process of demonstrating through scientific experiments that a business idea is actually viable. This method prioritizes a continuous feedback loop where the goal is to turn ideas into products, measure customer response, and adjust the strategy accordingly.

This approach adapts principles from high-efficiency manufacturing to the unpredictable world of innovation. In a traditional factory, progress is measured by the number of high-quality goods produced on time and on budget. In a startup, the primary goal is figuring out the right thing to build so that resources are not wasted on unwanted features. By using innovation accounting to track progress and focusing on small batches of work, founders can avoid wasting years of their lives on ideas destined to fail.

To understand how this works, it is helpful to compare a startup to driving a car rather than launching a rocket. A rocket launch requires incredibly precise instructions because a tiny error at the start leads to catastrophe, much like a rigid business plan that shatters when customers behave unexpectedly. In contrast, driving a car is a process of constant steering where you have a clear destination but make small adjustments based on road conditions. By treating entrepreneurship as a rigorous, experimental process, founders can balance the need to serve current customers while constantly innovating to find a sustainable path forward.

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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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