After acquiring another company, an organization now has two AWS accounts and wants to consolidate billing for them. Which AWS service should they use?

AWS Organizations allows you to consolidate multiple AWS accounts into a single organizational unit, enabling consolidated billing. This means you receive one bill for all accounts, simplifying cost management and potentially reducing costs through volume discounts. Systems Manager is for operational insights and automation, not account consolidation. License Manager helps manage software licenses, which is unrelated to consolidating AWS accounts. Cost Explorer is a tool for visualizing and managing AWS costs, but it doesn't consolidate accounts; it analyzes costs across accounts already consolidated or individually.