> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-xdr-5.x/detect-investigate-and-respond-to-threats/investigate-and-respond-to-cases/automation/engines/use-an-engine-in-an-integration.md).

# Use an engine in an integration

When you create an integration instance, you can select whether to fetch issues and run commands executed for the integration using the engine or a load-balancing group of engines. After you add the engine or load-balancing group to an integration instance, you can run commands using the engine or load-balancing group by specifying the **`using`** argument in the Issues War Room.

Before configuring an integration to run using multiple engines in a load-balancing group, we recommend that you test the integration using a single engine in the load-balancing group.

{% hint style="info" %}
Long-running integrations should not run on load-balancing groups.
{% endhint %}

**Command Example**

**`!url url="www.cnn.com" using=urlscan.io_instance_1`**


---

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