Market Sizing Analysis

Market Sizing Analysis

Comprehensive market sizing methodologies for calculating Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for startup opportunities.

Use this skill when

• Working on market sizing analysis tasks or workflows
• Needing guidance, best practices, or checklists for market sizing analysis

Do not use this skill when

• The task is unrelated to market sizing analysis
• You need a different domain or tool outside this scope

Instructions

• Clarify goals, constraints, and required inputs.
• Apply relevant best practices and validate outcomes.
• Provide actionable steps and verification.
• If detailed examples are required, open resources/implementation-playbook.md.

Overview

Market sizing provides the foundation for startup strategy, fundraising, and business planning. Calculate market opportunity using three complementary methodologies: top-down (industry reports), bottom-up (customer segment calculations), and value theory (willingness to pay).

Core Concepts

🧠 Knowledge Modules (Fractal Skills)

1. The Three-Tier Market Framework

2. When to Use Each Methodology

3. Methodology 1: Top-Down Analysis

4. Methodology 2: Bottom-Up Analysis

5. Methodology 3: Value Theory

6. Step 1: Define the Market

7. Step 2: Gather Data Sources

8. Step 3: Calculate TAM

9. Step 4: Calculate SAM

10. Step 5: Calculate SOM

11. Step 6: Validate and Triangulate

12. SaaS Markets

13. Marketplace Markets

14. Consumer Markets

15. B2B Services

16. For Investors

17. For Strategy

18. Reference Files

19. Example Files