Granting users permission to assume an IAM role

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A developer with an administrative AWS account can allow a user to assume an IAM role. To do that, you create a new policy and attach it to that user.

The policy must include a statement with the Allow effect on the sts:AssumeRole action, plus the Amazon Resource Name (ARN) of the role in a Resource element, as shown in the following example. Users that get the policy, either through group membership or direct attachment, can switch to the specified role.

{
  "Version": "2012-10-17",
  "Statement": {
    "Effect": "Allow",
    "Action": "sts:AssumeRole",
    "Resource": "arn:aws:iam::<aws_account_id>:role/workdocs_app_role"
  }
}