Adobe Systems Inc., the elder software-business statesman behind photo-editing software Photoshop and PDF reader, is buying e-commerce firm Magento Commerce for $1.68 billion, adding a key piece to its platform.

The acquisition — which would put Adobe head-to-head with the likes of Salesforce.com — presents a revenue opportunity of some $13 billion, Brad Rencher, Adobe’s executive vice president of digital experience, said in a conference call Monday, citing market-research firm estimates.

Magento, already an Adobe partner, was bought in 2015 from eBay Inc. as part of a $925 million deal by a group of investors that included Permira, Sterling Partners, Longview Asset Management and Innotrac Corp. Permira carved out Magento in November of that year.

Magento, whose clients include Canon and Rosetta Stone along with overlapping Adobe customers Coca-Cola Co. and Nestlé SA , handles more than $150 billion in gross merchandise volume, according to Permira. Under the terms of the deal, which is expected to close in the third quarter, Magento Chief Executive Mark Lavelle would continue to lead Magento’s roughly 700 workers as part of Adobe’s digital experience business, Adobe said.

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Adobe to buy e-commerce platform Magento in $1.68 billion deal