Salesforce's Marc Benioff on goal to double revenue — 'Slack changes everything' CNBCSalesforce to Buy Slack for $27.7 Billion Bloomberg Quicktake: NowSalesforce to Acquire Slack for $27.7 Billion The New York TimesSalesforce acquires Slack for over $27 billion, marking cloud software vendor's largest deal ever CNBCSalesforce beats growth expectations as investors digest the Slack acquisition TechCrunchView Full Coverage on Google News