B. Kevin Turner (born April 3, 1965) is an American businessman and investor who is currently the chairman of Zayo Group and the vice chairman of Albertsons/Safeway Inc. From 2016 to 2017, he was the vice chairman of Citadel LLC and CEO of Citadel Securities. Prior to joining Citadel LLC, Turner served as the COO of Microsoft from 2005 to 2016. Turner came to Microsoft from Walmart in 2005. During his nearly 20 years at Walmart, Turner rose through the ranks from a store cashier to eventually becoming the company's global CIO and later CEO of Sam's Club, a $37 billion division of Walmart. As Microsoft's chief operating officer, Turner led the company’s global sales, marketing and services organization. He also managed Microsoft’s partner channels and corporate support functions, including information technology, licensing, pricing, and operations. His organization included over 70,000 employees in more than 190 countries. During his tenure as COO, Turner served through the transitions of Bill Gates, Steve Ballmer and Satya Nadella. Early life and education Turner grew up in Stratford, Oklahoma. In 1987, Turner earned a Bachelor of Science in business administration with a concentration in management from East Central University in Ada, Oklahoma, where he was a member of the Pi Kappa Alpha fraternity. During his college years, he worked full-time as a cashier at Walmart. Career Early career at Walmart (1985–2000) Turner worked nearly 20 years at Walmart. He began working as a cashier at Walmart in 1985 in his hometown of Ada, Oklahoma. While attending college, he rose through the store ranks, to customer service manager, housewares department manager and head office cashier. After several promotions, Turner found himself in the auditing department, where he came into contact with Sam Walton. On Walton's advice, Turner joined the company's information systems division, where he worked his way through a succession of jobs: business analyst, strategy manager, director, and then assistant CIO. In 1995, at the age of 29, Turner became the youngest corporate vice president and officer ever named at Walmart. In 1997, Turner became the recipient of the first "Sam M. Walton – Entrepreneur of the Year" award, which is the highest honor given at Walmart and is voted on by the Walton Family. CIO of Walmart (2000–2002) In February 2000, Turner became the chief information officer of Walmart at the age of 34, when former Walmart CIO Randy Mott departed for Dell.