Vani Agarwal
5 days ago6 min read
Beyond the Viz: What Tableau Extensions Can Do and How to Build One
Most Tableau developers don't know this exists Tableau has a feature that's been available since version 2019.3, is fully documented, requires no licensing add-on, and is almost entirely ignored by the community. Extensions. Not plugins, not integrations — extensions. A way to embed a fully custom web application directly inside a Tableau dashboard or worksheet, with live access to data, filters, parameters, and mark selections. Real-time. Two-way. No iframe tricks, no extern








