Security in Amazon S3 Stages

You can configure the Amazon S3 origin and destination to use one of the following authentication methods to connect securely to Amazon Web Services (AWS):

Instance profile
When Transformer runs on an Amazon EC2 instance that has an associated instance profile, Transformer uses the instance profile credentials to automatically authenticate with AWS.
For more information about associating an instance profile with an EC2 instance, see the Amazon EC2 documentation.
AWS access keys
When Transformer does not run on an Amazon EC2 instance or when the EC2 instance doesn’t have an instance profile, you can authenticate using an AWS access key pair. When using an AWS access key pair, you specify the access key ID and secret access key to use.
Tip: To secure sensitive information, you can use credential stores or runtime resources.
None
When accessing a public bucket, you can connect anonymously using no authentication.