It is Steve Blank's method for validating a business idea by talking to real customers before building the product. Instead of assuming what the market wants, you test it through interviews and low-cost experiments, adjusting the business model based on what you find.

Start with a real problem you know firsthand, validate the idea with a handful of people before investing time or money, and use short test-and-adjust cycles. Experience is built by executing small, not by waiting for the perfect plan.

They are ways of organizing work in short cycles (sprints) with frequent deliveries and constant adjustments, instead of planning everything upfront. They help teams respond quickly to change, reduce risk, and stay focused on what actually creates value.

With simple, sustainable systems: fixed routines, clear weekly priorities, and honest tracking of results — not willpower. Discipline works best when it depends on a repeatable process, not on how motivated you feel that day.

Traditional management plans the full scope upfront and measures success by sticking to that plan. Agile management plans in short cycles, prioritizes what creates the most value first, and adjusts direction with every delivery based on real feedback.