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The assurance layer
A ten-part argument that moves from exploration uncertainty and evidence — through public data, capital, decisions, application boundaries and orchestration — to an assurance layer that governs whether the operating model still behaves as intended.
10 parts
- 01Not all uncertainty can be removedExploration will always involve geological uncertainty. The more useful question is which other uncertainties can be reduced, exposed or governed.
- 02Public data is part of the investment infrastructureGeological surveys do more than support science. They change the cost and quality of the first investment decision.
- 03Capital should buy information, not just activityMetres drilled, money spent and programme completion are necessary measures. They are not the same as learning.
- 04A decision should preserve its evidenceThe value of a decision record lies not only in what was decided, but in the evidence, assumptions and alternatives that existed at the time.
- 05One application should not have to understand everythingRelated business questions do not automatically belong in the same application. Boundaries can improve clarity, ownership and implementation.
- 06Shared meaning matters more than a shared databaseIndependent systems can cooperate without sharing tables if they agree on identity, semantics and authority.
- 07The difficult part is often between the systemsA system can be healthy while the operating environment is wrong. Some failures exist only in the relationships between applications.
- 08An event tells you what happened. What detects what didn't?Event-driven systems are good at reacting to change. Operational assurance also needs to detect absence, staleness and missing consequences.
- 09An alert is not an exception-management systemDetection is only the first step. Operational exceptions need ownership, evidence, remediation, verification and closure.
- 10The operating model needs an assurance layerApplications execute work. An assurance layer asks whether the wider operating environment continues to behave as intended.