In Production · Field Note 9 of 9

The Three-Year Platform Review

Cost versus business case, the five decisions that mattered in years two and three, and what to leave for the next team.

SR
Steve Rackham
2 min read Guides

Recap. Three years since the mandate. The platform runs, tenants deploy, and the original builders are not all still in the room. Time for the honest ledger.



Outline

  • Hook: The board asks for a three-year retrospective — not a celebration, a review
  • Structure: Cost vs. business case; decisions in years 2–3 that outweighed the original build
  • Scorecard: Engineering vs. governance vs. conversations (callback to series two finale)
  • Handoff: This platform will outlive its builders — what did we leave that they can actually run?

Sections to Draft

  • Three-year metric table (run cost, tenants, attrition, incidents, waivers)
  • The five decisions that mattered most in years 2–3
  • Deferred decisions revisited from the design document
  • Closing scene — Barry Bigboss or successor asks the next question
  • Steal-this checklist (pointer to appendix)

Next in the Series

Appendix — “The Operating Years Checklist.” The review lens distilled — mirroring the failure modes catalogue style.

One Block

Schedule a three-year review before someone schedules it for you — and agree the three metrics that will define success before the meeting, not during it.