very expensive...
"On the heels of Google buying analytics startup Looker last week for $2.6 billion, Salesforce today announced a huge piece of news in a bid to step up its own work in data visualization and (more generally) tools to help enterprises make sense of the sea of data that they use and amass: Salesforce is buying Tableau for $15.7 billion in an all-stock deal."
Revenue US$ 877 million (2017)[1]
Net income US$ 5,873,000 (2014)[2]
Number of employees 4,181 (May 2019)[3]
Website tableau.com