Walmart is bidding adieu to its CMO. Barbara Messing, who has held the top marketing job at Walmart since August of last year, is leaving her post to “return to the Bay Area with her family,” according to an internal memo announcing her departure. Her last day will be August 30. “During her time at Walmart, she’s led both memorable and effective creative campaigns that reached our customers in new and unexpected ways,” wrote Janey Whiteside, chief customer officer, in the memo. “She’s been an advocate for our customers, encouraging our teams to think differently about how to reach them outside of traditional advertising avenues to truly tell one holistic Walmart story.” Read more at Adweek.