AWS Security Blog
Category: AWS Identity and Access Management (IAM)
Generating IAM Policies in Code
If you’ve worked with AWS Identity and Access Management (IAM) policies, you know that they’re expressed as JSON documents. For example, here’s a policy that grants permission to perform some actions in our Amazon Glacier storage service: { “Version”: “2012-10-17”, “Statement”: [ { “Action”: [ “glacier:ListVaults”, “glacier:DescribeVault”, “glacier:GetVaultNotifications” ], “Effect”: “Allow”, “Resource”: “*” } ] } […]
Writing IAM Policies: How to Grant Access to an Amazon S3 Bucket
February 20, 2025: This post was republished to reflect the updated least privilege permissions necessary for read-write access to Amazon S3. In this post, we’ll address a common question about how to write an AWS Identity and Access Management (IAM) policy to grant read-write access to an Amazon S3 bucket. Doing so helps you control who can access […]