Office Universal
Our Office Universal apps are designed for on-the-go productivity. They’re touch-first, built for tablets and phones, and optimized for viewing, quick edits, notes and mark-up. On a tablet, the Universal apps are fast, fluid, and streamlined for an immersive, hands-on experience. They’re fantastic for reading and perfect for touch- and pen-based content creation. On a phone, the Universal apps adapt to the smaller form factor. Commands and controls are moved to the bottom of the screen so you can triage your work and make edits one-handed with your thumb. (That may sound like a small thing—but wait until you try it. It makes all the difference!)
Read more at source: http://blogs.office.com/2015/04/17/modern-productivity-office-on-windows/
