> ## Documentation Index
> Fetch the complete documentation index at: https://docs-xcor.paloaltonetworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Search and query telemetry data

> Learn about how to query your telemetry data from Cortex XCOR.

After [ingesting](/ingest) your telemetry data into Palo Alto Networks Cortex XCOR, you can
query that data to surface information when you need it. This capability is
especially useful during incident response when you're trying to identify the source
of an issue.

How you query telemetry data in Cortex XCOR depends on the data type. Use
these resources to learn how to query your data:

* [Search logs](/investigate/querying/query-logs)
* [Search metrics](/investigate/querying/metrics)
* [Search traces](/investigate/querying/traces)
* [Filter events](/investigate/querying/filter-events)

To visualize the results of queries,
[add queries to dashboards](/investigate/querying/dashboard-query)
from supported Explorers. You can also [create links](/investigate/querying/create-links)
between telemetry types, such as linking to trace or log data from dashboards.

Learn about using [regular expressions](/investigate/querying/regular-expressions)
and [glob syntax](/investigate/querying) in queries, including where they're
supported and how they differ.

If you're querying metric data, learn about
[Using PromQL in Cortex XCOR](/investigate/querying/promql), including the
most relevant features and syntax.

To query your data without writing the query yourself, use
[query generation](/investigate/querying/natural-language) to produce a query from a
description, or ask [Operator](/navigate/operator) a question and let it run
the queries it needs across metrics, logs, traces, and change events.


## Related topics

- [Query Optimization for Metrics](/academy/courses/query-optimization-for-metrics.md)
- [Exploring Metrics](/academy/courses/exploring-metrics.md)
- [Introduction to PromQL](/academy/courses/introduction-to-promql.md)
- [PromQL 201](/academy/courses/promql-201.md)
- [Working with Sparse Metrics](/academy/courses/working-with-sparse-metrics.md)


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