A developer should be able to optionally configure the bucket to require a multi-factor authentication token for requests. The token is passed as a key to the x-amz-mfa header. The tokens are generated with virtual MFA devices like Google Authenticator (TOTP), or a hardware MFA device like those provided by Gemalto.
Updating the QA Contact to a Hemant. Hemant will be rerouting them to the appropriate QE Associate.