The world’s largest retailer said on Tuesday that it would start offering curbside pickup for groceries ordered online in eight new markets this month – including Atlanta and Salt Lake City – with more to be added in the coming weeks. Wal-Mart has been testing online grocery delivery services in two markets and pickup in the five markets of Denver, Phoenix, San Jose, California, Bentonville, Arkansas, and Huntsville, Alabama. “We are not walking away from delivery,” said Michael Bender, Chief Operating Officer of global e-commerce at Wal-Mart.