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Google states they have 30 locations around the world. Losing three would be painful but not fatal.

not all datacenters are created equal. Remember the consequences of the AWS outage caused by problems in just a single region

A single AWS region can be a dozen DCs. An AZ is shared infra (power circuit, fiber ingress) and be over a few buildings.

yandex story is not that different. Strikes targeted power, leaving AZs offline