Which AWS tool or resource is available to accomplish these goals?
Resource tagging
AWS Concierge Support team
AWS Abuse team
AWS Support
Explanations:
Resource tagging helps in organizing and tracking AWS resources but does not directly assist in understanding monthly bills or billing best practices.
The AWS Concierge Support team is specifically designed to assist AWS Enterprise Support customers with billing inquiries and to implement billing best practices.
The AWS Abuse team deals with issues related to abuse and security, not billing inquiries or support.
While AWS Support can provide assistance, the Concierge Support team is the dedicated resource for billing questions and best practices for Enterprise Support customers.