One page, nine blocks
The Lean Canvas fits a whole business model on one page. Product blocks sit on the left, market blocks on the right, the value proposition in the middle, and money along the bottom.
Customers and problems
Start with who has the problem (1) and what the top problems are (2). Note the existing alternatives they use today and the early adopters who feel the pain most.
Unique value proposition
Next (3), write one clear message that explains why you are different and worth attention. A high-level concept like 'X for Y' makes it stick.
Solution and channels
Only now sketch the simplest solution (4) for each problem, and the channels (5) through which you will reach your customers.
The economics
Revenue streams (6) and cost structure (7) together show whether the model can become profitable and how much you must learn before money runs out.
Metrics and advantage
Key metrics (8) are the few numbers that prove progress. The unfair advantage (9) is what cannot be copied or bought, and is often the last block you can fill honestly.
Fill, test, repeat
The pink line traces the recommended fill order. Every block is a hypothesis: test the riskiest ones first with real customers and update the canvas as you learn.