In Production · Field Note 7 of 9

Key Person Risk and Bus Number One

Year three: the identity expert leaves. Knowledge lives in exceptions and ask-Dave paths, not in the documentation. Written for NZ platform teams.

SR
Steve Rackham
2 min read Guides

Recap. The platform refreshed without a headline incident. Then the person who held half the tribal knowledge gives notice — ties back to series two’s fractional team and bus-factor themes.



Outline

  • Hook: Two weeks’ notice from the one human who understands the identity integration
  • Context: Documentation vs. archaeology — what platform docs must actually contain
  • Handover: The two-week handover that wasn’t
  • NZ field note: What you find when you map every “ask Dave” path in the organisation

Sections to Draft

  • Runbook inventory vs. exception register vs. decision document
  • Minimum documentation for a 2–4 FTE platform (practical, not aspirational)
  • Pairing and rotation before you need them
  • Steal-this checklist

Next in the Series

Part 8 — “Platform vs. the Hyperscaler’s Native Answer.” The provider ships a managed service that does 70% of what your team built — and tenants ask why they cannot use it.

One Block

Ask your team: what breaks if the most knowledgeable person is unavailable for a fortnight — and write down the first three answers as tickets, not assumptions.