Customer Segments in the Business Model Canvas describe the different customer groups a company serves. Segmentation is the starting point for the entire business model because different customer groups have different needs, willingness to pay, and access paths. Without clear segmentation, the value proposition remains generic and the channel strategy arbitrary.
Segments can be formed by various criteria: by industry, company size, usage behavior, willingness to pay, or by adoption phase (Early Adopters vs. Mainstream). The decisive factor is that each segment justifies its own consistent set of value proposition, channels, and relationship types. For example, Slack serves small teams (self-service, Freemium), mid-sized companies (sales-assisted, Pro plan), and enterprises (enterprise sales, dedicated instance) as three distinct segments, each with its own approach and monetization.
The field comes from the Business Model Canvas by Osterwalder and Pigneur. The most common mistake is overly broad segmentation following the principle “anyone who pays is a customer.” The more precisely segments are defined, the sharper the rest of the business model becomes.