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Granting user access to a single Amazon S3 bucket.

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Granting an IAM user access to a single bucket is really easy:

  1. Create a User in IAM via the Amazon Web Console
  2. Assign that user the following policies via: Settings > Attach User Policy > Custom Policy
{
  "Statement": [
    {
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": [
        "arn:aws:s3:::bucketname",
        "arn:aws:s3:::bucketname/*"
      ]
    }
  ]
}
{
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:ListAllMyBuckets",
      "Resource": "arn:aws:s3:::*"
    }
  ]
}