SAP is planning to acquire e-commerce company Ariba in a transaction worth about US$4.3 billion expected to close in the third quarter of this year. Ariba provides cloud-based collaborative business commerce through a Web-based trading community that enables companies to find, connect and collaborate with a global network of partners. Its Commerce Cloud is a platform that businesses can use to buy and sell goods. Currently, Ariba counts more than 700,000 companies worldwide attached to this network. The purchase follows SAP's acquisition of cloud-based HR software vendor SuccessFactors for $3.4 billion. In the past SAP had been reluctant to make large acquisitions, but these two large purchases and the naming of Lars Dalgaard, former SuccessFactors CEO, to the SAP executive board indicate the strategic imperative SAP puts on quickly gaining a solid cloud presence. The acquisition also complements its 2011 acquisition of Crossgate, an electronic data interchange (EDI) service provider, which enables companies to exchange documents with customers, suppliers, supply chain partners, financial institutions and government entities, streamlining transactions and cutting administrative costs.