Addressable market is the portion of a total market a company can realistically serve given product capabilities, geographic reach, target segments, channels, and regulatory constraints. Often synonymous with SAM (Serviceable Addressable Market) in the TAM/SAM/SOM framework, it's typically much smaller than total market (TAM) but more strategically meaningful because it represents customers the company can actually pursue today. It is the market-sizing concept that most directly informs go-to-market strategy and resource allocation, more useful than total TAM for actual operating decisions.
What constraints define addressable market:
Product constraints: