[jeffbee]

I can’t imagine what part of Google’s history would lead someone to believe there was any third party system in their production stack anywhere.

[marcan_42]

Now their corporate/finance stack on the other hand... shudder.

[enneff]

Well, google did use a bunch of off the shelf technologies in the early days, but now it is obvious that there is no vendor on earth that could supply the infrastructure to run Gmail.

[still_grokking]

Didn't they use GNU/Linux form day one on?

[jeffbee]

Closed-source like Oracle I meant. They've been big boosters of all kinds of open-source stuff like linux, llvm, mysql, ...