Market Size Estimation Cheatsheet

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• TAM (Total Addressable Market): The whole pie. The total market demand for your product or service.

• SAM (Serviceable Available Market): A smaller piece of the pie. The segment of TAM that you can reach based on geographic location and serviceability.
• SOM (Serviceable Obtainable Market): The smallest slice of the pie. The portion of SAM that you can realistically capture given your business’s resources and competition.