Satya Nadella:

A great idea shouldn’t have to wait for you to get back to a particular device. An impromptu call with a customer shouldn’t be delayed because you don’t have the right data on hand. Life moves too fast to put limits on where and how you work. Just as the best camera is the one you have with you, sometimes the right device is the one closest at hand. Simply put, our vision is to deliver the best cloud-connected experience on every device.

A few buzzwords aside, this is a great post. Clear and fairly concise. It seems like he gets it.