Last week, at a large developers’ event, Microsoft formally introduced its next operating system to the world, and it’s nothing like the Windows you’re used to. It’s clear the company has watched and learned as Apple stormed into the marketplace with the iPhone and iPad. Microsoft’s new Windows 8 looks and feels like it’s built from the ground up to do away with the noisy, dated interfaces of the desktop computer, replacing them with a touch-friendly experience that’s focused on a new way of computing.