Salesforce has agreed to acquire its Marketing Cloud partner Krux, which offers a data management platform. Salesforce will pay $340 million in cash and issue between 3.4 million and six million shares of common stock to consummate the deal, according to documentation filed with the U.S. Securities and Exchange Commission on Monday. That's worth an estimated $700 million in all. Krux will extend the Salesforce Marketing Cloud's segmentation and targeting capabilities to power consumer marketing with even more precision at scale.