M6 · THE 90-DAY PLAYBOOK · P17

The Stack Inheritance Playbook

Four archetypes. The agent strategy you’ll execute was already decided by your last 12 months of contracts.

6 SLIDES · ~6 MIN · PLAYBOOK OVERVIEW
Key Takeaways
  • The agent strategy you will execute was already decided.
  • Name the archetype — pull the top five AI contracts and identify which platform has the most data gravity today.
  • Four archetypes. The agent strategy you’ll execute was already decided by your last 12 months of contracts.
BENCH MODULE · FRIDAY · MODULE 6 · PLAYBOOK 17

The Stack Inheritance Playbook

Four archetypes. Which of the four owns you?

BuildClub Academy
THE THESIS

The agent strategy you will execute
was already decided
by your last 12 months of contracts.

The Thesis
01 · THE FOUR ARCHETYPES

Four archetypes. One already owns you.

1
Microsoft shop
Nearly 70% of Fortune 500 use M365 Copilot (Ignite 2024). M365 is the daily OS. Azure is the data layer. Agent strategy: Copilot + Azure OpenAI + Fabric.
2
Salesforce shop
CRM is the system of record. Customer data moat lives in Salesforce Data Cloud. Agentforce is the agent layer.
3
Lean tech-forward
Minimal legacy. Builds first. Anthropic + Perplexity + point solutions. Maximum optionality but highest engineering overhead.
4
Vertical SaaS heavy
60–80% of workflow runs inside a vertical SaaS (e.g., Veeva in life sciences, Procore in construction). Agent strategy is whatever the vendor ships next.
02 · ARCHETYPE → STRATEGY

The strategy that works in each archetype.

1
Microsoft shop
Consolidate on Copilot. Avoid agent sprawl. Fabric for the data moat. Common error: trying to build lean.
2
Salesforce shop
Build in Agentforce. Use Data Cloud as memory layer. Resist point-solution sprawl. Common error: ignoring Data Cloud.
3
Lean tech-forward
Build constellation. Perplexity for prototyping. Anthropic for production. Common error: buying Microsoft licenses you do not need.
4
Vertical SaaS heavy
Pressure vertical vendor for AI roadmap commitments. Run one parallel open-source stack as negotiating leverage. Common error: waiting for vendor to innovate.
03 · HOW THE ARCHETYPE WAS SET

Three decisions that set your archetype — none of them were AI decisions.

1
The ERP or HCM choice
SAP or Workday as the system of record often pushed toward Microsoft for integration.
2
The CRM choice
Salesforce as the growth system of record locked in the Salesforce archetype.
3
PE or strategic partner
PE-backed firms often inherit the portfolio’s preferred vendor stack. Copilot Cowork on Anthropic running on Microsoft Azure is a real pattern from PE joint ventures.

The archetype is not a technology decision. It is the accumulated effect of five years of SaaS procurement.

MONDAY-MORNING ACTIONS

Three moves to design from your archetype.

Monday Morning
  1. 1
    Name the archetype — pull the top five AI contracts and identify which platform has the most data gravity today.
  2. 2
    Stop shopping outside the archetype — every new point solution that does not integrate is technical debt you are buying on purpose.
  3. 3
    Design the agent strategy from the data gravity, not from the benchmark — the best model is the one your data already lives near.
P17 · Questions CEOs Ask

Frequently Asked Questions

What is the core idea of The Stack Inheritance Playbook?
The agent strategy you will execute was already decided.
What should a CEO do Monday morning after reading The Stack Inheritance Playbook?
Start here: Name the archetype — pull the top five AI contracts and identify which platform has the most data gravity today; Stop shopping outside the archetype — every new point solution that does not integrate is technical debt you are buying on purpose; Design the agent strategy from the data gravity, not from the benchmark — the best model is the one your data already lives near.
Where do the claims in The Stack Inheritance Playbook come from?
The playbook cites YPO Technology Network AI Daily Brief #51 "The Grown-Up Era of Enterprise AI" (May 1, 2026); Microsoft Ignite 2024 — 70% of Fortune 500 use M365 Copilot; Salesforce Agentforce announcements (2025–2026); YPO Technology Network AI Daily Brief #14 "When Your Rival Becomes Your Engine".
P17 · Sources

All Sources in This Playbook

  • YPO Technology Network AI Daily Brief #51 "The Grown-Up Era of Enterprise AI" (May 1, 2026)
  • Microsoft Ignite 2024 — 70% of Fortune 500 use M365 Copilot
  • Salesforce Agentforce announcements (2025–2026)
  • YPO Technology Network AI Daily Brief #14 "When Your Rival Becomes Your Engine"
  • YPO Technology Network AI Daily Brief #28 "PE Joint Ventures"
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