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Cloud Computing · Intermediate

Preventive Guardrail

Governance control that blocks noncompliant actions before they happen, typically implemented with policies.

Definition

Preventive guardrails enforce rules by denying actions, for example SCPs in AWS, Azure Policy deny effects or Google Cloud organization policies. They stop violations outright but must be designed carefully to avoid blocking legitimate work.

Example

An SCP prevents anyone from disabling GuardDuty in member accounts.

Exam tip

Preventive equals blocks the action; detective equals finds and reports it after it occurs.

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