Satya Nadella Delivers Opening Keynote
In This Photo: David Treadwell
David Treadwell, Microsoft corporate vice president operating system group, speaks during a keynote address during the 2014 Microsoft Build developer conference on April 2, 2014 in San Francisco, California. The 2014 Microsoft Build developer conference runs through April 4.
(April 1, 2014 - Source: Justin Sullivan/Getty Images North America) more pics from this album »