"Fuck a Bank :)" — meanwhile, the situation can be quite simple. For example, a city in the time zone of +6 from Moscow. Enterprise server crashes, the documents from the client need immediately. Techsupport we do not indulge, often the night shift except to accept the application doesn't know anything. What do we do — tell the customer "Come as Nerezinovoy Wake up" or will give adresochek? Response is needed now, the question of "SchA wait, we will try to Wake up the admins, they just went to bed" does not rise — at least 30 minutes this will take in the best case. And such examples — hundreds, because now all major office centralizes it on the head branches, which are located in Moscow or St. Petersburg. And local leave only enikey and cartridges to change.