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In AWS IAM policy evaluation, which statement has the highest priority?

easy📝 Conceptual Q2 of 15
AWS - Identity and Access Management
In AWS IAM policy evaluation, which statement has the highest priority?
AExplicit Allow
BImplicit Deny
CExplicit Deny
DResource-based policy
Step-by-Step Solution
Solution:
  1. Step 1: Identify priority of policy effects

    Explicit Deny always overrides any Allow in AWS IAM evaluation.
  2. Step 2: Compare with other effects

    Implicit Deny applies when no Allow exists, but Explicit Deny is stronger.
  3. Final Answer:

    Explicit Deny has highest priority -> Option C
  4. Quick Check:

    Highest priority = Explicit Deny [OK]
Quick Trick: Explicit Deny always beats Allow in IAM policies [OK]
Common Mistakes:
  • Thinking Explicit Allow overrides Deny
  • Confusing implicit and explicit denies
  • Assuming resource policies override denies

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