Salesforce.com Inc., which makes America’s dominant sales-tracking software, agreed to buy Tableau Software Inc. in an all-stock deal valued at $15.3 billion that it said will help give customers more ways to analyze data.\nThe takeover will mark Salesforce’s largest deal to date, according to data compiled by Bloomberg. Co-Chief Executive Officers Marc Benioff and Keith Block have been chasing new markets to reach an annual revenue goal of as much as $28 billion by fiscal 2023. Benioff has helped Salesforce increase revenue at a rapid clip by acquiring more than 60 companies in 20 years.\nThe deal, if approved, would be “absolutely transformative” for Salesforce, Wedbush Securities analyst Steve Koenig said. The acquisition further intensifies Salesforce’s rivalry with Microsoft Corp., Koenig said. “This adds more urgency for public cloud vendors to lead the analytics market into a new era.”\nTableau will remain headquartered in Seattle and will continue to be led by CEO Adam Selipsky, a former Amazon.com Inc. executive who has been transitioning Tableau’s software tools to cloud-based subscriptions. With Tableau, Salesforce will be able to help companies tap into data they have, make smarter decisions and boost innovation. IDC projects worldwide spending on technologies and services that enable digital transformation to reach almost $2 trillion in 2022, according to a statement from the companies Monday.\nTableau software quickly turns raw data into easily understandable dashboards and charts. The company has been broadening its product line to include data cleanup and machine learning tools, enabling it to compete in the wider data-warehousing business. It has more than 86,000 customers, including Verizon Communications Inc. and Netflix Inc.\n“Tableau helps people see and understand data, and Salesforce helps people engage and understand customers,” Benioff said. “It’s truly the best of both worlds for our customers.”\nThe deal comes after Alphabet Inc.’s Google agreed to buy Looker Data Sciences Inc. for $2.6 billion last week, a move to expand Google’s offerings for managing data in the cloud.\nEach share of Tableau Class A and Class B common stock will be exchanged for 1.103 shares of Salesforce common stock, the companies said. The deal price represents premium of 42% to Tableau’s closing price on Friday. Salesforce shares were down 4% at 9:56 a.m. in New York while Tableau gained 37%.\nSalesforce shares are lower on the news because the deal likely stokes concern that the company can no longer sustain growth on its own and is having to buy it, said Wedbush’s Koenig. He rates the stock outperform.\nSan Francisco-based Salesforce sees the deal cutting its full year adjusted earnings per share outlook by 37 cents to 39 cents to $2.51 to $2.53 a share. Bank of America Merrill Lynch is serving as exclusive financial adviser to Salesforce and Goldman Sachs is serving as exclusive financial adviser to Tableau. The deal is expected to close during Salesforce’s fiscal third quarter ending Oct. 31.