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If the system is so complex it requires multiple in person training courses and exams, that honestly sounds like more of a disadvantage than an advantage. I guess from a selfish individual perspective maybe the system that lets you build a stack of certificates is better than the one that anyone can use, but that's not a recipe for long term success.


Nothing required certification.

But certification programs are useful for management because they give you a floor level on the expertise you are buying.

That's why all (?) enterprise software that has customization/administration has certification programs (eg https://training.linuxfoundation.org/full-catalog/)




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