Which action should the user take?
Contact the dedicated AWS technical account manager (TAM).
Contact the dedicated AWS Concierge Support team.
Open a business-critical system down support case.
Open a production system down support case.
Explanations:
A dedicated AWS technical account manager (TAM) is typically assigned to accounts with Enterprise Support plans, not Business-level plans. Therefore, this option is not applicable.
The AWS Concierge Support team is primarily available for accounts with Enterprise Support and is focused on billing and account management issues. Business-level accounts do not have access to this team for production issues.
Opening a business-critical system down support case is not the correct action for a production service disruption, as this option is more aligned with Enterprise Support plans that include business-critical support cases.
Opening a production system down support case is the appropriate action for a user with a Business-level AWS Support plan facing a production service disruption. This type of case ensures that the issue receives the necessary attention and priority from AWS support.
If memory serves me right, the answer is:
Open a production system down support case.