# Subflow

The sublow node is a reusable flow. It can be used by different workflows where the same set of actions needs to be performed.\
\
It's a [**best practice**](/aisera-platform/ai-automation-optimize-flow/ai-workflow-studio/workflow-best-practices.md) to build your workflow based on multiple subflows.

Subflows are built just like other workflows. They have a set of nodes that are repetitive and can be used in other flows. A popular example is the **approval flow** that you can use when the user has to go through the same approval process for a set of actions.\ <br>

<figure><img src="/files/kBMGBPY1uw0DoBmCg42D" alt=""><figcaption></figcaption></figure>

In the screenshot above, clicking on the magnifying glass icon opens the subflow from the main workflow.


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