The lean startup methodology primarily relies on developing a perfect business plan before launching a product or service.

The lean startup method actually starts with an idea and quickly builds a minimal version of a product to test real customer interest. Instead of waiting for a flawless business plan, it relies on rapid experiments, customer feedback, and data to decide whether to keep, pivot, or stop. By measuring real results, entrepreneurs learn what works and what doesn’t, reducing wasted effort. For example, a coffee‑shop app might launch a simple booking page to see if people order, and only then invest in full‑featured software. This iterative, evidence‑based approach is the core of lean startup.