market-sizing-analysis

TAM, SAM, and SOM market sizing breaks a total market into total addressable opportunity, the serviceable segment you can reach, and the share realistically obtainable in a specific timeframe.

Calculate TAM, SAM, and SOM for a startup by applying customer counts, pricing assumptions, geographic filters, and segment filters, then triangulating sources and validating against comparable market data.

The best way to estimate market size is to compare top-down, bottom-up, and value-theory approaches side by side, triangulating data points to build a defensible view of the opportunity instead of a guess.

To prepare for market sizing analysis, gather target customer counts, pricing assumptions, geographic boundaries, segment filters, and a defined time horizon to ensure accurate TAM, SAM, and SOM estimation.

Yes, value-theory market sizing works for a new SaaS product by estimating the total value created for users and capturing a portion of that value as revenue, running alongside top-down and bottom-up methods.

Avoid relying solely on a top-down market sizing approach when you lack reliable industry reports, as it can inflate the opportunity; instead, validate estimates using bottom-up customer counts and pricing assumptions.