Joe Belfiore, Microsoft’s corporate vice president of Windows, is apparently very confident of Windows 10’s S Mode, which was officially revealed this week: in a “stunning endorsement,” Belfiore suggests that S Mode will be the most popular way to run the OS. It is expected to debut alongside the Redstone 4 update in April. Belfiore characterized Windows 10’s S mode as the “‘low-hassle’/ guaranteed performance version” of Windows. Belfiore called out the security, faster boot time, better battery life and consistent performance that Windows 10’s S mode produces. Windows 10's S mode blocks the operating system from using traditional Win32 apps, allowing only apps from the Windows Store instead.