# Overlap Analysis
Overview
The Segment Overlap Analysis feature helps you identify the common population between two segments. This is crucial for two primary reasons:
* **Optimizing Activation Budgets**: Prevent unnecessary spending by avoiding targeting highly similar populations with separate campaigns.
* **Analyzing Rule Similarities**: Understand if different segmentation rules unintentionally capture the same audience, revealing hidden correlations.
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Segments should **share the same parent model** to be eligible for overlap analysis.
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You can see overlaps in different places: directly in the segment builder or once the segments have already been created.
### How to see Overlaps
#### Directly in the Segment Builder
* Open the **Segment Builder**.
* Select or create a segment.
* Click on the *Overlap* tab.
* **Select comparison segment**: A list of segments with the same parent model will appear. Select the segment you want to compare.
* **View the overlap Analysis**: DinMo will generate a visual representation showing the overlap between the two populations.
#### Once the Segments have been created
* **Navigate to your segment**: go to the Segments section in DinMo and click on the segment you want to analyze.
* **Access overlap analysis**: In the segment Analysis tab, click on the "Overlap" button.
* **Select comparison segment**: A list of segments with the same parent model will appear. Select the segment you want to compare.
* **View the overlap Analysis**: DinMo will generate a visual representation showing the overlap between the two populations.
