A company operates multiple AWS accounts under AWS Organizations and wants to monitor Amazon EC2 usage to control unexpected cost increases. The cloud governance team needs to be alerted automatically whenever EC2 usage in any account exceeds a threshold based on historical trends. Specifically, if EC2 usage or spending rises by more than 15% compared to the 45-day average, the team wants to receive a daily notification. The solution must require minimal manual intervention and work across all member accounts. Which solution will BEST meet these requirements?