A woman walks past a billboard for Windows 10, the latest operating system from US software giant Microsoft, during a launch event in Seoul on July 29, 2015. Microsoft is aiming to build lasting relationships with the operating system Windows 10 seen as critical to reviving the fortunes of the once-dominant tech giant. AFP PHOTO / JUNG YEON-JE (Photo credit should read JUNG YEON-JE/AFP/Getty Images)
