AWS IAM Policies in a Nutshell

J Cole Morrison wrote an excellent guide into AWS IAM policies. It’s super useful for anyone who have tried implementing IAM policies and failed (or even barely succeeded).

What is an AWS IAM Policy?

A set of rules that, under the correct conditions, define what actions the policy principal or holder can take to specified AWS resources.

That still sounds a bit stiff. How about:

Who can do what to which resources. When do we care?

There we go. Let’s break down the simple statement even more…

Compared to all the AWS documentation one has to dive through, this one is a giant time saver!

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