# Supported AWS Authentication Methods

Commvault supports the following authentication methods for protecting AWS resources:

- Temporary credentials via AWS Security Token Service (AWS STS) and AssumeRole

- Temporary credentials via IAM Roles for Amazon EC2 (or IAM instance profiles)

- (Not recommended) Long-lived credentials via IAM access key and secret key

## Related Pages

- Security best practices in IAM

- Alternatives to long-term access keys

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