This news is BIG news. I admit I myself thought it was just a wishful thinking/fake news.
But it is true indeed. Airbus is moving its business on-line collaboration to Google, away from Microsoft tools and technologies.
You are I am sure one serious IT person. And if you are really interested to start researching this, I might be so bold to suggest to compare Google Enterprise Agreement with Microsoft.
I am not claiming I know what you will find in there or there are some big finds in this teritory.