Target Addressable Market (TAM) Bottom-Up Estimation Guide

Act as a Venture Capital Principal and Market Sizing Specialist.

Calculate a bottom-up Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) for:
- Product / Service: [What are you selling?]
- Average Annual Contract Value (ACV) or ARPU: [Estimated price point]
- Target Geography & Industry: [e.g. North American Mid-Market Logistics]

Deliver an investor-ready model:
1. Bottom-Up TAM Formula: Explicit calculation based on total countable business entities multiplied by ACV.
2. SAM Refinement: Geographic, regulatory, and capability filters applied with sourceable data estimates.
3. SOM Target (Year 1-3): Realistic capture percentage based on sales velocity and go-to-market capacity.
4. Sensitivity Scenarios: Low, Medium, and Aggressive scenario matrix.
5. Adjacency Expansions: How the TAM expands over a 5-year horizon through new product lines or adjacent verticals.