A lot of people are joking about the Windows 10 error message that says 'Something Happened'. Well, that's not on me. My original idea was to not have any errors at all, and for the operating system to be called Windows RT ME One.

Technologies will come and go, so you need to be able to both ask and answer the question: What do you do as a company, why do you exist?

This is a critical time for the industry and for Microsoft. Make no mistake, we are headed for greater places — as technology evolves and we evolve with and ahead of it. Our job is to ensure that Microsoft thrives in a mobile and cloud-first world.

One of the key things in the tech business in particular is that you need to be able to push boundaries.

The way I measure my life is 'Am I better than I was last year?'

In the post-Snowden world, you need to enable others to build their own cloud and have mobility of applications. That’s both because of the physicality of computing–where the speed of light still matters–and because of geopolitics.

Be passionate and bold. Always keep learning. You stop doing useful things if you don't learn. So the last part to me is the key, especially if you have had some initial success. It becomes even more critical that you have the learning 'bit' always switched on.