What is a custom visual in Power BI?

A custom visual in Power BI refers to a visual that is created using JavaScript, allowing developers to extend the built-in visual capabilities of Power BI. Such visuals are designed to meet specific data visualization needs that may not be addressed by the standard visuals provided by Microsoft. By utilizing JavaScript and the Power BI Custom Visuals SDK, developers can create tailored visuals that are more suited to unique datasets or specific analytical scenarios.

This flexibility enables organizations to leverage specialized visual representations that can enhance data storytelling and user engagement. Custom visuals can also include interactive elements, which improve the overall user experience by facilitating deeper analysis of the underlying data.

The other options do not accurately reflect the nature of custom visuals. Standard visuals are provided by Microsoft and lack the tailored customization that custom visuals offer. A visual with no interactivity does not meet the interactivity standards typically expected from Power BI visuals, which aim to enhance user engagement. Finally, while sharing capabilities of custom visuals can vary based on their creation and the environment, they can generally be shared and utilized across different reports, which contradicts the idea of a visual that cannot be shared.