An application team uses an organization in AWS Organizations to manage multiple AWS accounts in...

Create a usage report in AWS Cost Explorer. Set up automated alerts to notify the application team when usage exceeds the budget so the application team can take immediate actions to reduce costs.

Create a fixed monthly budget in AWS Budgets. Create a budget action to apply a service control policy SCP to the OU to deny additional usage when the application team reaches the monthly budget. Configure a budget action to send a notification to an Amazon SNS topic that invokes an AWS Lambda function to stop all running EC2 instances.

Create an Amazon CloudWatch metric and a CloudWatch alarm for when the application team reaches the monthly budget. Configure the CloudWatch alarm to send a notification to an Amazon SNS topic that invokes an AWS Lambda function to stop all running EC2 instances.

Use AWS Cost Anomaly Detection to monitor the application team ' s usage and to alert the application team about unexpected spending patterns.