About Tableau
The visual-exploration BI tool that lives or dies on its data layer.
Tableau was founded in 2003 out of Stanford research on visual analytics, went public on the NYSE in 2013, and was acquired by Salesforce in 2019 for $15.7 billion. The platform spans Tableau Desktop for authoring, Tableau Server and Tableau Cloud for sharing workbooks, Tableau Prep for in-tool data preparation, and Tableau Pulse for metric-driven alerts. Its strength has always been visual exploration: drag-and-drop authoring against a schema, with a calculation language built for analysts.
That strength is also where Tableau pages go wrong. Every workbook can connect to a different source, save its own extract as a .hyper file, and define its own version of revenue. After a couple of years a typical Tableau site has hundreds of extracts on overlapping refresh schedules and three published data sources for the same fact table. Pulling Tableau onto a curated warehouse model puts the calculations, joins and grain in one place, so the workbooks become a presentation layer on top of one definition rather than the place where the definitions are invented.