BOISE, Idaho — Albertsons Cos. has promoted Jim Donald to the role of chief executive officer, succeeding Robert Miller, who remains with the company as its board chairman.

Donald returned to Boise earlier this year to succeed the retiring Wayne Denningham as the company’s president, a title he retains as he assumes day-to-day oversight of 2,300 stores operating under 20 banners, including Albertsons, Safeway, Jewel-Osco, Shaw’s and Acme.

Donald is also expected to help guide the development of Albertsons Cos.’ digital platform, which recently partnered with Instacart to launch O Organics Market, a virtual grocery store offering nearly 3,800 organic, natural and other better-for-you items available for delivery.

Albertsons offers home delivery from the majority of its locations through its own platforms and Instacart. It is also expanding its Drive Up & Go click-and-collect service, which should be available in more than 500 locations by the end of this year, the company said.

“Jim is an exceptional retailer. In the seven months since he joined Albertsons Cos., he’s flown tens of thousands of miles and met personally with thousands of employees in hundreds of our stores, distribution centers, manufacturing plants and offices around the country,” Miller said.

Donald first joined Albertsons in 1976, working his way up to vice president of operations in Arizona. He has also led Pathmark stores, worked in management at Walmart, served as CEO of hotel chain Extended Stay America and held leadership roles at grocery retailer Haggen Inc. and global coffee retailer ­Starbucks Corp.