Which AWS feature allows you to set alerts based on unusual spending patterns?

The feature that allows you to set alerts based on unusual spending patterns is AWS Cost Anomaly Detection. This service uses machine learning models to monitor your spending and identify any unusual trends that deviate from your normal patterns. When it detects unexpected spending behavior, such as a cost spike or unanticipated usage, it generates alerts. This proactive approach helps you manage and control costs effectively, enabling you to respond quickly to any irregularities in your AWS expenditure.

In contrast, while AWS Cost Management provides various tools for monitoring and managing costs, it does not specifically focus on anomaly detection. AWS Cost Explorer allows you to visualize and analyze your spending over time but is primarily an analytical tool rather than an alerting mechanism for unusual patterns. AWS Budgets enables setting custom budgets and alerts but is limited to predefined spending thresholds rather than detecting anomalies automatically in spending behavior.