Testing Business Ideas

A comprehensive, beautifully designed field guide to validating business ideas through structured experimentation. David J. Bland and Alexander Osterwalder built this book as the practical companion to the Business Model Canvas and Value Proposition Canvas.

Why Start Here

The book contains 44 experiments organized by what they test: desirability (do customers want this?), feasibility (can we build this?), and viability (should we build this?). Each experiment is presented as a card with a consistent format: description, strength of evidence, time and cost, setup instructions, and tips for getting reliable results.

This structure makes the book uniquely useful in practice. When you need to validate an assumption, you can flip to the relevant section and find an experiment that fits your constraints. Need quick, cheap evidence? Pick a low-fidelity experiment. Need stronger validation before a big investment? Choose something more rigorous.

Bland brings deep practical experience from his work at Precoil, where he coaches teams through real validation cycles. Osterwalder contributes the strategic framing that connects individual experiments to the bigger picture of business model design.

What to Expect

At 368 pages with full-color visual design, this is both a reference book and an engaging read. The Strategyzer visual style makes complex concepts accessible and scannable. You do not need to have read “Business Model Generation” or “Value Proposition Design” first, though familiarity with those frameworks adds context. This is the book you will keep on your desk and reach for every time you need to plan a validation sprint.