Azure Monitor alerts: metric vs log search vs activity log

This sheet compares metric alert, log search alert, activity log alert.

Criterionmetric alertlog search alertactivity log alert
EvaluatesMetric time seriesKQL over Log Analytics tables; simple variant evaluates each row individuallyAzure control-plane events

The verdict, the full comparison, 3 rules and 2 traps are part of AZ-305 access. Unlock AZ-305.