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---
title: "TAM/SAM/SOM"
type: concept
tags: [market-sizing, business-analysis]
sources: [raw/Agent/agency-agents/product/product-trend-researcher.md]
last_updated: 2026-04-20
---
## Definition
TAM/SAM/SOM 是市场规模分析的三层模型,用于量化市场机会的大小和可实现性。
## Three Layers
- **TAMTotal Addressable Market**:总可寻址市场,自顶向下和自底向上分析
- **SAMServiceable Addressable Market**:可服务市场,考虑地理和业务约束后的现实市场机会
- **SOMServiceable Obtainable Market**:可获得市场,通过竞争分析确定的可实现市场份额
## Analysis Methods
- Top-down Analysis自顶向下从宏观市场向下分解
- Bottom-up Analysis自底向上从细分市场向上聚合
- Validation交叉验证确保准确性