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Overlay

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**Overlay**

What is Overlay?

In computing, an overlay is a technique used to run software or systems on top of existing ones. It can refer to various implementations, such as overlay networks (virtual networks built on top of a physical network), software overlays (graphical or functional extensions), or even data overlays (superimposing data onto an image or map). Overlays are commonly used for network virtualization, application enhancements, and data visualization.

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