Sparkling natural beverage leader Izze Beverage Co. in August named Maile Buker to oversee all marketing functions, including brand development, public relations, event marketing, product placement and consumer relations. A former resident of Boulder, Buker returns from recent assignments as global director of marketing and direct sales at Black Diamond Equipment, a leader in backcountry climbing and ski gear, and as global product line manager at Nike. In Boulder, Buker was the director of sales and marketing at Kryptonics. Buker also worked in lifestyle and sports marketing at Coors Brewing Co.