Microsoft Build Conference Continues in San Francisco
In This Photo: David Treadwell
David Treadwell, corporate vice president, operating systems group at Microsoft, speaks on stage during the 2015 Microsoft Build Conference on April 30, 2015 at Moscone Center in San Francisco, California. Thousands are expected to attend the annual developer conference which runs through May 1.
(April 29, 2015 - Source: Stephen Lam/Getty Images North America) more pics from this album »