в блоге довольно интересно написано, какую систему гугл использует в своем интранете, много секурной инфы конечно замазано, но общее впечатление составить можно.
Но не это главное - там в конце статьи написано про службу поддержки:
"Tech Stop support wasn’t always that luxurious though, as Doug Edwards noted in another article. When he left the company in 2005, a supportive Tech Stop was available in every building – but in the beginning when he joined, he notes that for instance not all operating systems were supported. When you were facing an issue with corrupted Windows DLL files, a common response was, "Why aren’t you running Linux?"