1. Faster than B-plans: The Lean Canvas is the logical first step to deconstruct a startup idea which takes ~20 minutes to make instead of making grand business plans that can take 20+ days.
2. Lightweight: It's a one-page summary of a business model design. Very easy to carry, share and it actually gets read by investors.
3. Dynamic: The Lean Canvas isn't rigid, unlike a B-plan. Users can iterate over their plans quickly, easily adapting to changing market conditions.