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Evaluation flow

Explore how AWS IAM evaluates access requests by building request context, matching applicable policies, and applying evaluation logic. Understand how IAM filters policies based on principals, actions, and resources, and learn the decision process that determines access permissions.

Now that we’ve discussed how IAM sees the request and how policies work that control access, it’s time to look into the exact steps it takes to reach a decision whether it allows or denies the request.

Step 1: Build the request context

First, it builds the request context based on the elements we’ve discussed in the ...