Lizzy Li writes about the new custom visualizations framework for Dashboard Studio, introduced in Splunk Cloud Platform 10.4.2604 and Splunk Enterprise 10.4, which replaces the legacy framework with a modern sandboxed iframe architecture, simplified JSON-based configuration, and a full CLI/SDK development pipeline supporting React, TypeScript, and watch mode.
- Legacy framework required touching four separate files to add a single configurable option; the new framework consolidates this into a single config.json
- A custom-visualization-builder skill (available in Splunk Agent Skills on GitHub) can scaffold, implement, build, and package a visualization from a data shape description
- Splunk recommends rebuilding important Classic custom visualizations with the new framework rather than relying on backward-compatibility rendering