How? Just like every other 170+ Million dollar company out there. Show me one that IS NOT using Open Source somewhere in their organization and I'll eat something disgusting.
Considering that even Microsoft has been embracing PHP, WordPress, and other OSS projects lately, I can't imagine you'll find a major technology company not using open source somewhere. Actually, I doubt you can find a major company in any industry that isn't...
Do I get to decide what disgusting thing you eat? :)