The Total Addressable Market (TAM) represents the total revenue opportunity available for a product or service if it were to capture 100% market share. It is a broad measure that encompasses all potential customers and sales opportunities within a particular market, regardless of any limitations such as geographic constraints, pricing strategies, or competition. In contrast, the [[Serviceable Available Market (SAM)]] narrows this scope to the segment of the TAM targeted by a company's products or services that is within its reach. The [[Serviceable Obtainable Market (SOM)]] further refines this by representing the portion of the SAM that a company can realistically capture, considering factors like competition and operational capabilities.