The future of secure, modern Windows apps needs to go beyond Surface.

At the Microsoft shareholders' meeting last week, some unhappy Windows phone fans who also happen to be shareholders asked CEO Satya Nadella what Microsoft was doing for the consumer market on its own platform, not just on iOS and Android.

Nadella's answer was that consumer and enterprise users are still just people who use the same device at home and at work, whatever platform they're on.

"I don't think of these as separate markets. I think about users, people, and their devices. The basic construct that we think about architecturally and technically is that it's not about just one device, it's about all the devices for the person. In other words, whether it's the app or the operating system, we want to build it for the person across their devices," he said.

In other words, the shareholders didn't need to worry about not finding Outlook or Pix in the Windows phone Store because they already have them. "Outlook, interestingly enough in the context of the Windows Phone, is the mail client, you don't need to go look for another client because it's built into the phone, whereas, in your own operating systems, the camera will have the smarts, you don't need a separate application. You will not need another separate mail program. When we control things silicon up, that's how we will integrate those experiences."

It certainly makes sense for Office and plenty of other Microsoft apps to be cross platform -- what Nadella calls the mobility of the experience rather than the device. Wherever you go, there's Office and you need Office 365 to get all the features.

That keeps users who'd otherwise switch to different tools...

Read more: Microsoft's real problem with mobile isn't (just) devices | ZDNet