Crossing the Chasm: Marketing and Selling Disruptive Products to Mainstream Customers
Source: https://www.harpercollins.com/products/crossing-the-chasm-3rd-edition-geoffrey-a-moore ↗
Moore's central model: the technology adoption lifecycle has a gap — the chasm — between early adopters (who buy on vision) and the early majority (who buy on references and pragmatism), and most technology products die in that gap because the go-to-market strategy that won early adopters does not work on pragmatists.
The book prescribes a specific sequence: pick a beachhead segment, dominate it, use it as a reference base to cross into adjacent segments.
For product direction the model is the canonical framework for understanding why products with enthusiastic early users stall at scale.
The examples are dated (1991 vintage); the framework has not been replaced.
Read alongside Christensen's The Innovator's Dilemma for the disruption complement and Ries for the validation stage that precedes the chasm.
Central argument
Moore argues that the technology adoption lifecycle contains a structural discontinuity — the 'chasm' — between early adopters, who purchase on vision and tolerance for risk, and the early majority, who require peer references and proven pragmatic value before committing. Most technology products fail not because of poor engineering or weak early traction, but because the sales and marketing motion that converts visionaries actively repels pragmatists. Moore's prescribed remedy is precise: select a single beachhead segment, achieve dominant penetration within it, and use that installed base as the reference credibility needed to move into adjacent segments sequentially.
Critique
The beachhead model assumes a relatively legible market structure where segment boundaries are stable enough to dominate before expansion — an assumption that frays in platform and marketplace businesses, where network effects mean early segment choices compound in ways that can permanently foreclose adjacent markets rather than open them. The framework also treats the chasm as a universal law of diffusion, but it may describe a particular era of enterprise software procurement; SaaS with low switching costs, product-led growth, and viral adoption loops have produced cases where the early majority is reached through the product itself rather than through a sales reference chain, suggesting the chasm's width is variable, not fixed.
Why it matters for product
For a CPO, the chasm model provides a diagnostic for one of the most politically charged moments in a product's life: when early user enthusiasm — often celebrated internally as validation — fails to convert into mainstream growth, and leadership misreads a structural go-to-market problem as a product quality problem. The beachhead prescription has direct implications for roadmap prioritization: it argues against broad feature coverage designed to appeal to multiple segments simultaneously, and instead demands that product investment be concentrated to make one segment's use case unambiguously complete before expanding scope. This reframes decisions about saying no not as resource constraints but as strategic prerequisites for crossing into scale.