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ideas/infrastructure-ops/cost-anomaly-detector.md

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+# Cost Anomaly Detector
+
+Monitor cloud spending in near real time, detect abnormal spikes, and trigger alerts or safe remediation workflows before monthly bills explode.
+
+## Problem
+Cloud spend surprises are usually discovered days later in billing dashboards, after the costly behavior has already continued.
+
+## Core capabilities
+- Ingest billing and usage metrics from cloud providers.
+- Learn baseline cost patterns by service, account, and environment.
+- Detect anomalies using thresholds plus statistical deviation.
+- Trigger response playbooks: alert only, scale-down, or shutdown non-critical resources.
+
+## MVP scope
+- AWS Cost Explorer integration first, then Azure/GCP.
+- Daily anomaly scoring with high-priority instant alerts.
+- Human approval required for any destructive remediation.
+
+## Success criteria
+- Faster detection of abnormal cost events.
+- Measurable reduction in unplanned monthly overspend.
+
+## Stretch ideas
+- Forecast end-of-month bill scenarios with confidence ranges.
+- Recommend reserved instances or savings plans automatically.