GROWTH GROUP / B2B STRATEGY

Business Model Canvas: 9 blocks worth filling in before your strategy

Łukasz Siemaszko · September 24, 2026 · 8 min read

Most B2B companies know their products and their customers, yet they cannot say in a single sentence where their profit comes from and why a customer chooses them. The Business Model Canvas organizes that conversation onto one sheet. Below I show how to fill it in so it delivers answers, not just a nice board on the wall.

Where to start when you don't know where to start

It's worth filling in the Business Model Canvas before any discussion about strategy begins. A typical situation in a services company: leadership wants to refresh the strategy, sales complains that leads are weak, marketing reports reach that nobody reads. When asked "what do we actually make money on," the answer sounds like "serving clients." That's a paraphrase of the company name, not an answer about the source of revenue.

In conversations like these, business model canvas works as a shared language. One sheet, nine boxes, everyone fills in the same thing. Instead of three hours of discussion about who is right, you get an hour of discussion about what to put in a specific box. The result is measurable: you can see which assumptions contradict each other and which reinforce each other.

Before we get to the blocks, one practical note. The canvas is a thinking tool that only later turns into decisions about budget, channels, and people. It is not a strategy document. If you treat it as a goal in itself, it will end up in a drawer after the first quarter.

The 9 business model blocks in an order that makes sense

The classic order from Osterwalder's book is logical, but in B2B practice it's better to start from the right side. First the customer and the value, then costs and resources. Otherwise you'll end up with a beautiful description of what you can do and zero idea of who will pay for it.

1. Customer segments. Not "SMEs in Poland," but for example "manufacturing companies with 50-250 employees, with their own maintenance department." The narrower the segment, the easier it is to assess whether you can reach it at all.

2. Value proposition. One sentence the customer would repeat to their boss. If it sounds like a slogan from a flyer, go back to point one.

3. Channels. Here you list not only where you are visible, but also where the customer actually makes the decision. In B2B that's often a referral, an industry conference, or a contact from a former employer, not a search ad.

4. Customer relationships. Who is responsible for contact after the sale, what onboarding looks like, who calls after 90 days. This box is most often left empty, and it's the one responsible for retention.

5. Revenue streams. Break down what percentage of revenue comes from each type of contract. Subscription, project, maintenance, license. If one type is 80%, you have risk concentration, not a model.

6. Key resources. People, data, certifications, relationships, machines. In services companies the resource is most often a few specific people, which is both a strength and a bottleneck.

7. Key activities. What has to happen every day for the model to work. Not a wish list, only the things you actually do.

8. Key partners. Subcontractors, technology suppliers, agencies, law firms. Also write down what happens if one of them disappears overnight.

9. Cost structure.Fixed and variable, split by what scales with revenue and what does not. This block most often reveals why growth in sales does not translate into growth in profit.

Customer segments Value proposition Channels Customer relationships Revenue streams Key resources Key activities Key partners Cost structure The business model of a B2B company

Where B2B companies most often write down wishes instead of facts

After more than a dozen workshops with companies in the region, I see the same three patterns. First: the "value proposition" box ends up with a list of five things, because nobody wants to drop any of them. Second: the "channels" box gets every possible tactic, because that is what the industry standard looks like. Third: the "revenue streams" box gets what we would like to sell, not what actually generates invoices.

There is a simple test for this. Ask someone from finance to write the real share of revenue from the last 12 months next to each revenue stream. If the numbers do not match what is in the canvas, the canvas is lying. And a canvas that lies is worse than no canvas at all, because it gives a false sense of order.

The second test concerns segments. Pick one and try to name five specific companies that belong to it. If you cannot, the segment is too broad. That sounds trivial, but in practice it filters out half of the entries.

A business model canvas is not meant to describe a company nicely. It is meant to show where the assumptions do not hold together, before the market does.

It is also worth remembering that digital models often follow different logic than traditional ones. If a segment was too expensive for you in an offline channel, check whether it is still too expensive in a digital channel. In our practice this shows up most clearly when filling in the "channels" box: digital distribution lets you reach segments that were not profitable before.

Business Model Canvas and B2B marketing strategy

The canvas and the marketing strategy answer different questions. The canvas says how the company makes money. The marketing strategy says how it reaches the customer and how it convinces them. Without the first, the second is a set of tactics without context.

In practice it looks like this: if your canvas states that the main acquisition channel is a referral from an existing client, then a B2B marketing strategy cannot rely solely on search campaigns. It must include a referral program, community management in the industry, and content that existing clients want to pass on. Conversely: if the main channel is outbound, investment in content without sales support will not work.

That is why at Growth Group we start work with a client by asking about the model, not about the channels. In our practice, with the budgets we have managed in the region, the most common mistake was not a bad choice of channel, but a lack of consistency between what the company sells and how it communicates. The canvas exposes that inconsistency within a single meeting.

It is also worth distinguishing two levels of work. The canvas describes the model at the level of the whole company. If a company has several business lines, each deserves its own canvas, otherwise you average things out and lose sharpness. The same applies to new projects: before you invest in a new service, fill in a canvas for it and check whether it fits with the rest at all.

A canvas filled with wishes vs a canvas filled with facts
ElementWishful entry
Customer segmentsSMEsManufacturing companies with 50-250 employees
Value propositionEnd-to-end serviceReduction of downtime by a set amount of time
ChannelsAll possibleReferrals and industry conferences
Revenue streamsService sales70% subscription, 30% projects
Key resourcesExperienced teamThree certified people and a customer base

How to use the canvas every quarter so it does not end up in a drawer

A canvas that is not updated loses its value after two quarters. The market changes, customers change, costs change. That is why it is worth introducing a simple ritual: once a quarter, a 90-minute meeting where you go through all nine blocks and mark what has changed.

This is not about rewriting everything from scratch. It is about three questions for each block:

  • Is this still true?
  • How do we know this?
  • What would happen if this stopped being true?

The third question is the most important, because it reveals risks that are normally invisible. If all your revenue depends on one customer and the canvas does not mention it at all, you are describing luck, not a model, and luck runs out.

The second ritual concerns new ideas. Before anyone in the company gets a budget for a new project, they should fill in a canvas for it and show it to the team. This filters out ideas that sound good in a presentation but lack a coherent logic for making money. In practice, it saves more time than any project management tool.

And a third point, perhaps the most important one. The canvas is a team tool. If one person fills it in, you get their private picture of the company, not the company's picture. Bring sales, customer service, and finance into the conversation. Each of these people sees a different part of the model, and the truth is assembled from those parts.

If you want to turn the canvas insights into a concrete action plan, see how we approach B2B marketing strategy in companies across the region. The canvas is a starting point, not an endpoint. You can read more about the tool itself in our article on Business Model Canvas.

Quarterly canvas review in four steps
  1. 1

    Gather the data

    Revenue, costs, customer count, and acquisition sources from the last three months

  2. 2

    Go through the blocks

    For each of the nine blocks, ask three questions: is this true, how do we know, and what if it stops being true

  3. 3

    Flag the gaps

    List the places where the data does not match what is written in the canvas

  4. 4

    Turn insights into decisions

    Assign an owner and a deadline to every change in the model

Sources

  1. Osterwalder A., Pigneur Y., Business Model Generation, 2010
  2. Czerniawska F., Potter G., Digital Stractics: How Strategy Met Tactics and Killed the Strategic Plan, Springer, 2016
  3. Wierenga B., van der Lans R., Handbook of Marketing Decision Models, Springer, 2017

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Frequently asked questions

What is the Business Model Canvas in one sentence?

The Business Model Canvas is a one-page template that describes a company's business model in nine blocks: customer segments, value proposition, channels, customer relationships, revenue streams, key resources, key activities, key partners, and cost structure.

Does the Business Model Canvas work for B2B companies?

Yes, as long as you fill it in with specifics rather than generalities. In B2B, the customer relationships and key resources blocks matter especially, because revenue in these companies often depends on a few people and long-term relationships rather than individual transactions.

How many blocks does the business model canvas have?

Nine. They are: customer segments, value proposition, channels, customer relationships, revenue streams, key resources, key activities, key partners, and cost structure.

Which block should you start filling in first?

In B2B practice, it is best to start with customer segments and the value proposition, meaning the right side of the canvas. Only then do you move on to resources, activities, partners, and costs. Starting from the left side ends up describing the company's competencies without reference to who will pay for them.

How often should you update the Business Model Canvas?

Once a quarter is a reasonable rhythm. It is not about rewriting the whole thing, but about going through the nine blocks and checking what has changed. Without regular updates, the canvas loses its value after two quarters.

Łukasz Siemaszko

Łukasz Siemaszko

He has been running B2B marketing projects for 16 years. Growth Group has served more than 60 companies and generated PLN 160 million in profit for clients.

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About the author. Łukasz Siemaszko has many years of experience managing marketing. He combines strategy with hands-on execution, from audit and plan to day-to-day channel work, and manages by data: every marketing decision has a measurable goal. Today he is the founder of Growth Group, where clients pay for results.