Facebook looks within for its CMO, and Walmart's new stores have app appeal: Wednesday's Wake-Up Call

Meanwhile, Samsung offers self-serve ads; Coke taps Molson Coors in hard seltzer deal; and ‘Borat’ heads to Prime.

Meanwhile, Samsung offers self-serve ads; Coke taps Molson Coors in hard seltzer deal; and ‘Borat’ heads to Prime.Read MoreLatest News – Ad Age