To distribute power, authority, or control away from a single central point to multiple smaller or regional centers.
From de- (reverse, away from) plus centralize. British English spelling of the American decentralize; both emerged in the 20th century as modern governments and companies experimented with distributing power.
Tech companies like Google and Amazon decentralise their data centers across the world so that if one location gets hit by a natural disaster, the whole internet doesn't crash. It's redundancy as a survival strategy!
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