Steps for authorizing Requests to AWS - which may come from the Console, the CLI, or via an API
# Authentication# Processing the '''request context''' of ## Actions ## Resources ## Principal ## Environment data ## Resource data# Evaluating all policies within the account (both identity-based and resource-based)# Determining whether a request is allowed or denied
Types of Policies
* Identity-based policies - attached to Users, Groups, or Roles* Resource-based policies - attached to resource; define permissions for a principal accessing the resource.* IAM Permission boundaries - set the maximum permissions an identity-based policy can grant an IAM entity* AWS Organizations service control policies (SCP) - specify the maximum permissions for an organization or OU* Session policies - used with the AssumeRole* API actions
The '''effective''' permissions are the superset when combining an Identity-based policy with a Resource-based policy. But, are only the '''intersection''' when combining with Permissions boundary or Organizations SCP<ref>https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_evaluation-logic.html#policy-eval-basics-id-rdp</ref>
31. [HOL] Apply Permissions Boundary
With Permissions Boundary, you can prevent escalation of privileges.
32. Use Cases for IAM Roles
[[Category:AWS]]
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