Overlay analysis compares two or more layers and locating areas where they overlap one another. Depending on which tool you use, you can determine the areas where they overlap, erase the areas where they overlap, or combine the total areas of all the inputs.
The Overlay toolset includes the following tools:
| Tool name | Minimum licensing level | Short description |
| Erase | Advanced | It clips out areas of overlap from input features. |
| Identity | Advanced | It calculates areas of overlap and no overlap. |
| Intersect |
Basic |
It returns only the area of overlap. |
