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DevOps & Automation · Intermediate

Kusto Query Language (KQL)

A read-only query language used in Azure Monitor Log Analytics, Application Insights, Microsoft Sentinel, and Azure Data Explorer.

Definition

KQL pipes a table through operators such as where, summarize, project, extend, and render. DevOps engineers use it to query application telemetry and build alerts and workbooks.

Example

requests | where success == false | summarize count() by bin(timestamp, 5m)

Exam tip

Recognize KQL by its pipe (|) syntax and operators like summarize and project.

Related terms