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These networks are all built with resiliency in mind. Just in mind.
Those straws really eat into the bottom line...
Someone at Microsoft incorrectly configured a router on their global WAN, causing an outage on their services. >

It's really crazy the more you work in IT the more you realise how stuff is literally hanging together by threads.
I always picture it as a game of Kerplunk where you're constantly removing one of millions of straws and hoping a marble doesn't fall