Test and Debug IAM Policies with AWS IAM Policy Simulator

In this video, I walk you through how to use IAM Policy Simulator to test and debug IAM issues. Using this tool, you can integrate with IAM users that already exist in your AWS account and test certain API actions. The tool also shows you exactly which policy statement is granting/denying access to the API.

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[NaJoeLibre]

What a beast of a service. No more guessing about what went wrong access-wise!

[milanamatya]

This would really help a lot. Thank you for sharing with a very nice explanation.

[abdraoufx]

Your work and effort is much appreciated 👍

[BillyLongshot]

thanks that was really good. didn't know why my custom policy didn't apply to simulate against my s3 bucket

[sankara-sabapathy]

Thank you so much. This tool can simply be shared, but I appreciate you went one step ahead and explained it as well.

Dealing with numerous upstream and downstream system clients secrets. This will save my debugging time a lot.

[TheRed]

Can I do the reverse? - if I know I need to write into a bucket can the tool give me prescriptive advice? It could be helpful while designing complex scenarios. Also, can it alert when the policy is allowing lot more than is needed?

[DontTakeCrack]

anyone know how to deselect the user/group/role instead of refreshing the page?

[abhaythakur]

This tool is from AWS itself? is it ok to use this in our work account ?

[AlvinC-szli]

This only works for basic auth, cannot test access to resources with resource policy, or resources with customized authorizer.

[friedec]

This cannot solve most problem people has:
I want to create and setup a S3 but I don't know what permission I need.