Which AWS service enables users to consolidate billing across multiple accounts?
You can use the consolidated billing feature in AWS Organizations to consolidate billing and payment for multiple AWS accounts or multiple Amazon InternetServices Pvt. Ltd (AISPL) accounts. Every organization in AWS Organizations has a master (payer) account that pays the charges of all the member (linked) accounts.https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/consolidated-billing.html