AWS Backup adds OTP verification for logically air-gapped vaults

AWS Backup now requires one-time password (OTP) verification for Multi-party approval actions on logically air-gapped vaults, adding an extra security layer. Approvers must enter a code sent to their IAM Identity Center registered email to authorize protected vault operations. This feature is automatically applied to all existing and new Multi-party approval sessions for these vaults at no extra charge.