The B2B Stack

The B2B Stack

Moneyball for B2B: stop buying pretty stats, start buying pipeline

Mike Harty's avatar
Mike Harty
Sep 21, 2025
∙ Paid

Billy Beane didn’t win by signing shinier players. He won by pricing what the market ignored, using on-base percentage and building a system that compounded small edges.

B2B marketing has the same inefficiency today.

We keep optimising for good-looking numbers (CTR, MQL volume) that barely correlate with revenue.

I believe the 2025 edge goes to teams that buy undervalued signals and run their front office like… a front office.

The thesis

Modern B2B isn’t a battle for impressions; it’s a market for mispriced signals. The brands that win will:

Covering the future of B2B marketing

  1. define a win function tied to pipeline,

  2. model expected value before conversions land, and

  3. redeploy budget weekly into the most efficient “positions” (channels/creatives/supply paths).

Everything else is vibes.

1) Define the win function

Clicks don’t pay salaries. Opportunities do. Replace vanity metrics with a single north star:

Expected Pipeline Added (EPA)
EPA = Σ_touches [ P(opportunity_in_30_days | touch) × Expected…

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