Introduction
Market Sizing first defines the product, customer, geography, period, and revenue basis, then estimates TAM, SAM, and SOM through top-down, bottom-up, or value-based methods. Inputs retain their source, date, unit, and transformations, while a second method provides a cross-check. Base, conservative, and upside cases expose assumptions and uncertainty.
Use Cases
Use it for market entry, business plans, fundraising, regional expansion, portfolio choices, and sales targets. When industry reports are limited, it can build an estimate from customer counts, penetration, price, usage, or displaced spend and identify the variables worth researching next.
Template
Define the product or service, customers, geography, year, revenue unit, and purpose. Provide industry data, customer counts, pricing, penetration, or usage. Add TAM, SAM, and SOM boundaries, preferred methods, scenario ranges, required sources, and acceptable uncertainty.




