other senior executives, Turner was on the Senior Leadership Team that set the overall strategy and direction for Microsoft. As COO, Turner introduced procedures such as a "conditions of satisfaction" document that details what Microsoft will provide each client. A screw-up required a "correction of errors" in which employees autopsied the mistake and laid out steps to ensure it did not happen again. He also created standard scorecards with 30 categories to measure each subsidiary's performance. At Microsoft, Turner was known for his speeches at partner and sales events that amped up the rivalry with competitors like Oracle, Google and IBM. Turner also focused on training talents with initiatives such as ExPo Leaders Building Leaders program, a training and development program that involve multiple methodologies that are customized according to the position of the leader-participant in the organization. When Steve Ballmer announced he was stepping down as CEO, Turner was one of three internal candidates on the CEO short-list, but ultimately lost the job to Satya Nadella. In July 2016, after eleven years as COO, Turner left Microsoft to join Citadel LLC. From 2005 to 2016, Turner helped increase Microsoft's yearly revenue from $37 billion to over $93 billion. After his departure, Microsoft CEO Satya Nadella stated that in his time as COO, Turner "built the sales force into the strategic asset it is today with incredible talent, while at the same time more than doubling our revenue and driving customer satisfaction scores to the highest in company history." After his departure for Citadel LLC, Turner's responsibilities were split across five different Microsoft executives: Jean-Philippe Courtois, Amy Hood, Chris Capossela, Kurt DelBene and Judson Althoff. CEO of Citadel Securities (2016–2017) In July 2016, Turner left Microsoft to become the vice chairman of Citadel LLC and the chief executive officer of Citadel Securities. Citadel Securities is a market maker, providing liquidity and trade execution to retail and institutional clients. Turner's team included Jamil Nazarali, head of Citadel Execution Services, and Paul Hamill, global head of fixed income, currencies and commodities for Citadel Securities. His appointment occurred after Citadel Securities purchased the designated market-maker business of KCG Holdings and the Automated Trading Desk, a computer-based market making pioneer owned by Citigroup. On January 27, 2017, Turner left his position at Citadel Securities. Boards and other roles From 2010 to 2020, Turner served on Nordstrom's board of directors. He was on the technology