TestedLeadership, Coaching & People ManagementSame-Day Use (under 30 min)

Build a Sales-Focused TAM/SAM/SOM Analysis

Build a B2B market sizing model that ranks segments by sales attractiveness and produces GTM guidance.

About this prompt

This prompt builds a commercially rigorous TAM, SAM, and SOM analysis for Sales Directors, RevOps leaders, and founders who need market sizing that informs sales targeting rather than just investor storytelling. It uses both top-down and bottom-up logic, segments the market by commercial attractiveness, and produces clear GTM implications for where to focus. Fill in company, product, ICP, buyer roles, geography, business model, sales motion, and ACV before running.Most market sizing exercises produce a big number and stop there. This prompt builds a market model that actually helps a B2B sales organization decide where to focus: it identifies commercially relevant segments, assesses each on account volume, urgency, budget likelihood, deal size, sales cycle complexity, and expansion potential, then ranks segments by sales attractiveness. The analysis explicitly flags segments that look promising but are operationally difficult to penetrate, and segments that are too broad, slow, or expensive to prioritize. Key inputs include the ACV (if known), sales motion, and ICP — these are essential for making the segment attractiveness ranking commercially realistic. Use this for GTM targeting decisions and sales planning; for an investor-focused market sizing with analyst benchmarks, use the investor-ready TAM prompt instead. The output format explicitly separates public fact from inference and provides reasoned ranges rather than false precision.

The prompt

You are a senior B2B sales strategist, market intelligence analyst, and GTM planning advisor. Please build a rigorous, commercially useful TAM, SAM, and SOM analysis for the following business: Compan
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Variables to replace

COMPANY | PRODUCT | INDUSTRY | ICP | BUYER TITLES | GEOGRAPHY | MODEL | MOTION | ACV IF KNOWN

How to run it

  1. Copy the prompt and paste it into Claude, ChatGPT, Gemini, or Copilot — it's tuned to run in any of them.
  2. Replace the variables — swap each bracketed token for your deal's specifics. The variables list above explains every field.
  3. Make it yours — run it, keep what's strong, and tighten your inputs on the next pass. The prompt improves with your context.

What good output looks like

Make it yours

StagePre-Prospecting
SeatSales Director, RevOps / Sales Ops, Founder-Led Seller
DifficultyAdvanced
Time to valueSame-Day Use (under 30 min)
Works withAI-Agnostic
CategoryLeadership, Coaching & People Management
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