I don't understand how people say MSFT's services and devices aren't integrated. In my opinion even with different enclaves and entities its still amazingly integrated. I have two laptops one running Windows 8, one running Windows 10 tech preview. I have a ASUS T100 running Windows 8.1, a Lumia 1520, and an Xbox ONE. That is what makes Xbox music, Office 365, Outlook, Onedrive, and the other applications across the different mediums so awesome. Not that iCloud or Google docs aren't sufficient, but my job revolves around MSFT applications and being able to seamlessly transition from work to home and still capture everything with no emulation is awesome. With Windows 10 the integration will be on a level that wont be rivaled because no one else has applications with devices across PC's, laptops, tablets, phones, and gaming consoles.