CF-AZ-GV-11Governance

How to detect spike & cost anomalies.

Spike & Cost Anomalies can quietly add recurring Azure cost when resource state, utilization, or lifecycle policy no longer matches real usage. This guide explains why it costs money, how to find it manually, and how Costframe detects it read-only.

CF-AZ-GV-11 • DETECTOR TYPE

Spike & Cost Anomalies

Impact: High
Resource: telemetry-ingestion-temp
+€350.00/mo
Utilization Telemetry
0 IOPS / Low utilization detected
Audit Rationale

Orphaned spike & cost anomalies found in billing records with zero active workload associations over a rolling 30-day window.

Operational Description

A sudden, anomalous spike in billing typically signals a configuration error, data ingestion loop, or uncoordinated deployment. Finding these anomalies hours after they occur prevents unexpected multi-thousand-dollar invoice surprises.

Primary Root Cause

Broken application logging loops, runaway script executions, or uncoordinated massive scale-outs that go unnoticed by the engineering team.

How Costframe Detects & Verifies This

We run daily statistical anomaly detection against subscription spending patterns, comparing current day ActualCost to a rolling 14-day standard deviation boundary.

Evidence:Current spending rate: €840/day • Historical spending boundary: €210/day.

Continuous cloud audits, automated

Run this detector and dozens of other cloud-waste rules across all your Azure subscriptions continuously.