Lean Canvas

Lean Canvas is an adaptation of the Business Model Canvas by Ash Maurya, designed for startups and new products. The game involves quickly filling out nine blocks to make the areas of uncertainty in a project visible. It facilitates a useful transition from intuitive ideas to an explicit, discussable, and testable model. The goal is not to produce a perfect plan, but to identify the riskiest hypotheses to test first.

Walkthrough

1. 1

   Frame the intention and maturity level

   5 to 10 min

   The facilitator opens by reminding everyone that the Lean Canvas is meant to clarify a new product or startup, not to prove that the idea is good. They say: "We will fill out a canvas in one go, then choose the riskiest hypotheses to test first." Each participant or team selects a specific idea to work on. The facilitator checks that the topic is concrete enough: a product, service, or offer aimed at identifiable customers.

   Tip — Politely interrupt overly broad ideas: ask "for whom, in what situation, with what problem?" before starting the canvas.

2. 2

   Present the nine blocks of the Lean Canvas

   8 to 12 min

   The facilitator presents the nine blocks to be filled: problem, customer segments, unique value proposition, solution, channels, revenue streams, cost structure, key metrics, and unfair advantage. They clarify that the problem block contains the three main problems, and that the customer segments block also includes early adopters. They explain that the unfair advantage refers to what cannot be easily copied or bought. Participants may only ask questions for clarification, without debating the content yet.

   Tip — Display the definitions of the blocks throughout the workshop: this prevents the group from turning the canvas into a list of general ideas.

3. 3

   Fill out the canvas in one go

   20 min

   The facilitator initiates a short and focused session: "You have about 20 minutes to fill out all the blocks, without seeking perfection. Write simple and testable formulations." Participants complete the canvas individually or in small groups, moving quickly and accepting blanks. The facilitator circulates, prompts with factual questions, and prevents lengthy discussions. The aim is to produce a first complete version of the model.

   Tip — Use a visible timer: the time constraint protects the group from endless analysis and quickly reveals unclear areas.

4. 4

   Read the canvas aloud

   8 to 15 min

   Each idea holder presents their canvas succinctly, block by block. The facilitator asks: "Read what is written, not what you would have liked to write." Other participants listen to identify inconsistencies, vague areas, and implicit hypotheses. Allowed questions are for clarification, not immediate advice. This step transforms the canvas into a shared and discussable object.

   Tip — When someone justifies a block at length, bring them back to the text: "What can we write exactly on the canvas?"

5. 5

   Identify the riskiest hypotheses

   10 to 20 min

   The facilitator explains that the Lean Canvas is not a conclusion, but a map of hypotheses. They invite the group to identify what, if false, would most likely cause the project to fail. Participants review the blocks and mark the critical hypotheses, particularly around the problem, customers, proposed value, revenues, costs, channels, and unfair advantage. The goal is to choose what should be tested first, rather than what is most comfortable to discuss.

   Tip — Consistently ask: "If this line is false, does the project still hold?" It’s a simple question that quickly prioritises.

6. 6

   Choose the first tests to conduct

   8 to 15 min

   The facilitator asks each participant or team to select the riskiest hypotheses to test first. They say: "Do not choose the easiest test; choose the one that reduces uncertainty the most." Participants formulate what they want to learn and from whom for each hypothesis. They avoid turning this step into a complete action plan: it’s about deciding the next priority validation. The facilitator prompts rephrasing until clear hypotheses are obtained.

   Tip — If the group starts moving towards solutions, return to the learnings: "What should this test teach us that we do not yet know?"

7. 7

   Close and anchor the learnings

   5 to 10 min

   The facilitator concludes by distinguishing what is known, assumed, and to be tested. They invite each participant to name a concrete decision arising from the canvas: modify a formulation, explore a segment, test a problem, or question a channel. They remind everyone that the canvas can evolve after each learning. Participants leave with a visible version of their model and a testing priority. This conclusion transforms the exercise into a continuous learning process.

   Tip — Take a photo or immediately export the canvas: without a shared record, hypotheses risk being rewritten later.

Variants

• Individual version: each participant fills out their own Lean Canvas, then receives clarification questions from a peer before choosing their risky hypotheses.
• Product team version: a single canvas is filled out collectively, with a facilitator who limits debates and notes disagreements as hypotheses to test.
• Remote version: use a collaborative whiteboard with the nine blocks visible, a shared timer, and a reading time aloud to avoid everyone working silently in their own corner.