I'm a competitive person by nature, and I have been in competitive companies, and I love to compete - joining a company where, certainly, there is a real fire in the belly to compete and bring that energy is something I look forward to.

The reality is the world's shifted; the world's evolved. We now measure ourself by total device space. We have a much bigger opportunity than we've ever had in the past to grow our business, but we have to rethink how we look at our business.

Citadel is a global technology leader, recognized for its work to level the playing field for investors and make markets more fair, transparent and efficient. I look forward to leading this exemplary team as we grow this global business.

If you bet on Microsoft, you are not going to ask anymore, 'Hey, where is the innovation?' The challenge going forward is how do we keep up with it.

When I talk about that Apple ecosystem, the ability to get one application to run across those five platforms is very difficult. In the future of Microsoft, using HTML5, IE9 and 10, the scalable OS, the ability to do that gets much, much easier.

It's so exciting to be able to talk about Office 365. I can only describe what Office 365 is in sort of two words. You could say technically it's three words. But Office 365, ladies and gentlemen, is nothing but a Google butt-kicker, that's all it is.