Interoperability
Instead of building separate operating systems for desktop and mobile, Windows 10 focuses on one, universal system for all devices. Microsoft said this represents the latest step in its "platform convergence journey." It wanted to allow one app to run across every Windows device -- phones, tablets, laptops, PCs, and even Xboxes. The goal is to drive scale, deliver unique experiences, and maximize developer interests.
The fact is that consumers today don't rely on just one device. Forty percent of people switch devices mid-activity, and people use different devices for different purposes. This is just as true in the business world, where mobile work is on the rise. With its emphasis on interoperability and universal apps, Windows 10 makes switching back and forth between devices a breeze.