Cost Management anomaly detection is now available for subscriptions in the cost analysis preview. To check cost anomalies for your subscription, open any view in the cost analysis preview and click the see insights link to view all insights and details.
Read more at the announcement site:
- Public preview: Cost Management anomaly detection for subscriptions
https://azure.microsoft.com/en-us/updates/preview-cost-management-anomaly-detection-for-subscriptions-2/