Customer Segments: What Goes in This Business Model Canvas Block

Every business model starts with the same question: who is this for? The Customer Segments block is where you answer it, and everything else on the canvas depends on how honestly you do.

What the Customer Segments block means

The Customer Segments block defines the different groups of people or organizations an enterprise aims to reach and serve. Alexander Osterwalder, who created the canvas, puts it bluntly: “Customers comprise the heart of any business model. Without (profitable) customers, no company can survive long.”

That is why this block sits first in the fill order. Before you can describe what you offer, how you deliver it, or what it costs, you have to name who you are building for. A value proposition without a segment attached is an opinion. A segment without a value proposition is a mailing list. The canvas forces you to pair them.

The block lives in the customer zone, on the right side of the canvas, the side that answers whether anyone actually wants what you are building. If you are new to the framework, what is the business model canvas covers the full nine-block structure.

What goes in it

Four things belong in this block, and most canvases only include the first:

1. Named, specific segments. Not “everyone,” not “businesses.” Groups get their own sticky note whenever they have distinct needs, are reached through different channels, require different relationships, differ substantially in profitability, or are willing to pay for different aspects of the offer. If none of those five conditions separates two groups, they are one segment.

2. An archetype or persona for each segment. For consumer models, one recognizable person. For B2B, the whole buying committee: the economic buyer who signs, the user who lives in the product, the influencer who champions it, and the blocker who can kill the deal. A B2B “segment” that names only the company type has skipped the hard part.

3. A segment type classification. The canvas recognizes five: mass market, niche market, segmented (related groups with slightly different needs), diversified (unrelated groups), and multi-sided platform. The last one matters most in practice. A card company needs both cardholders and merchants, and both must appear on the canvas, because losing either side collapses the model.

4. A star on the most important segment. One group is the one your model is optimized for. Mark it. When two segments pull the product in different directions, the star tells you who wins.

The guiding questions professionals ask

Facilitators and strategy consultants work through this block with a consistent set of questions. Use them as a checklist:

• For whom are we creating value? Who are our most important customers?
• Who is already paying us, and why? Which customers are the most profitable, and which drain resources?
• Are we serving one segment or pretending to serve five?
• Who is the user versus who is the payer? They are often different people, especially in freemium, ad-supported, and B2B2C models.
• Which segment would we fire first if forced to? Which would kill the business if it left?
• Can I picture one real, named person in this segment? Could I call them tomorrow?
• What does a day in this customer’s life look like before they meet us?

The last two are the acid test. If nobody in the room can name a real person who fits the segment, the segment is a guess.

Three concrete examples

Netflix: five segments, not one

It is tempting to write “people who watch TV” and move on. Netflix’s actual segment list shows why that fails. The company serves roughly 301 million paid households across 190+ countries, but that mass market splits into groups with genuinely different needs:

• Global entertainment subscribers: the core mass market, which forces content to travel across cultures.
• Price-sensitive, ad-tolerant viewers: the $6.99 ad tier reopened growth among people who churned or never converted at premium prices. By mid-2025 the ad tier had roughly 94 million monthly active users.
• Non-English local-language audiences in India, Korea, Latin America, and Japan, where local originals, low-priced mobile plans, and dubbing decide adoption.
• Advertisers and media buyers: a second customer side entirely, paying for attention rather than entertainment. This makes Netflix a multi-sided platform, not a simple subscription business.
• Former password borrowers: the 2023 sharing crackdown converted an estimated 100 million+ borrowing households into a paid acquisition pool.

Each segment justified a different move: the ad tier, mobile pricing, paid sharing. None of those decisions falls out of “people who watch TV.” The full breakdown is in the Netflix business model canvas example.

A B2B example: the bookkeeping software test

Compare two versions of the same segment. Weak: “SMEs.” Strong: “self-employed bookkeepers with 10 to 50 clients who still invoice in Excel.” The second version passes every test the weak one fails. You can find these people (bookkeeping associations, accounting forums). You can interview them. You can write an ad they would recognize themselves in. You know their current tool (Excel) and therefore their switching cost. The segment definition has already done half the work of the value proposition.

A two-sided example: a local services marketplace

A marketplace connecting homeowners with tradespeople has at minimum two segments: homeowners who need a plumber this week and want vetted options fast, and independent tradespeople who want a steady pipeline of jobs without paying for their own marketing. Different needs, different channels, different willingness to pay. Most marketplaces monetize one side and subsidize the other, which is a Revenue Streams decision you cannot make until both segments are on the canvas.

Common mistakes (and the fix for each)

Mistake 1: Vague labels instead of segments. “SMEs,” “millennials,” and “businesses” tell you nothing. You cannot find, interview, or market to a label. The fix: rewrite each segment until it is specific enough to act on, with a size, a situation, and a current behavior, like the bookkeeper example above. If you cannot name where these people gather, keep sharpening.

Mistake 2: Averaging multiple segments into one canvas. A model designed to serve five aspirational segments serves none of them well, because the average customer does not exist. The fix: create one canvas per segment, or at minimum color-code every sticky note by segment so conflicts become visible. A free business model canvas template makes it cheap to run one canvas per segment side by side.

Mistake 3: Confusing users with customers. In ad-supported, freemium, and many B2B products, the person who uses is not the person who pays. Netflix’s ad-tier viewer uses; the advertiser pays. The fix: put both on the canvas as separate segments, each with its own value proposition. If your model has a payer you have not named, your Revenue Streams block is guesswork.

How this block connects to the rest of the canvas

The canvas is a system, not nine independent lists, and Customer Segments is the block everything else references. Reviewers run these consistency checks:

• Every value proposition must point at a named segment.
• Every channel and every customer relationship must serve a specific segment.
• Every revenue stream must come from a specific segment paying for a specific value proposition.

Then there is change propagation: change your customer segment, and your channels, relationships, and value proposition all shift. Miss that connection and your canvas is fiction. This is why the most cited whole-canvas mistake is filling blocks in isolation, and why segment changes should trigger a review of the entire right side.

Where it appears in the fill order

Customer Segments is block 1 of 9 in the professional fill order, which runs right side, then left side, then bottom: value before infrastructure before finances. The full sequence starts Segments, Value Propositions, Channels, Relationships, Revenue Streams, then moves to resources, activities, partnerships, and costs.

In practice, experienced facilitators treat Segments and Value Propositions as a pair, iterating back and forth until the two click. This pair is the heart of the model; the other seven blocks exist to deliver and fund it. One nuance worth knowing: fill order matters less than validation order. Draft the whole canvas in 20 to 30 minutes, then stop debating the boxes and start testing the riskiest assumptions, which for most new models live right here in this block. The step-by-step walkthrough is in how to fill in a business model canvas.