Need a visualization type that Databricks doesn't support natively? Great, now with custom visualization, you are no longer limited to the built-in chart types.
You can now define dashboard visuals using Vega-Lite JSON specifications, which opens the door to more advanced and tailored chart designs directly inside Databricks dashboards.
Custom visualizations in AI/BI dashboards - Azure Databricks | Microsoft Learn
You can build visuals such as:
layered charts with rolling average
bullet, radial radar and many more chart type
reference dashboard dataset fields directly in your specification
layer multiple marks - points, lines and overlays in a single chart

And here's an example of how Vega-Lite JSON specification looks like:
