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by user5994461 3522 days ago
As I said. It's a simplification. I really don't (and can't) get into a long explanation here about how to run a complex DNS infrastructure spanning multiple continents and datacenters ^^

Thing is. You gotta to run your own DNS since the moment you want your own DNS names. Good for you if a simple external DNS service is enough for you, a single 20 people office is not comparable to what the websites mentioned are operating.