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The Azure Activity Log and diagnostic settings provide visibility into what is happening at the infrastructure level — who created or deleted resources, what configuration changes were made, and how the Azure platform itself is behaving. This layer of monitoring is essential for security auditing, compliance, and operational troubleshooting.
The Activity Log records control-plane operations — actions performed against Azure resources through Azure Resource Manager (ARM):
| Category | Examples |
|---|---|
| Administrative | Create VM, delete resource group, assign RBAC role |
| Service Health | Azure service outages and planned maintenance |
| Resource Health | Changes in the health state of your resources |
| Alert | Alert rule activations |
| Autoscale | Scale-up and scale-down events |
| Recommendation | Azure Advisor recommendation changes |
| Security | Microsoft Defender for Cloud alerts |
| Policy | Azure Policy evaluation results |
Each entry contains:
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