Many times during SSO presales or tender presentations, we will be asked the same question again and again - "What if the SSO infrastructure goes down?"
Ting ... Ting ...
Most of us who have been in this field long enough will respond that high-availability has to be in place for such a critical infrastructure. One could go further to elaborate about the the reliability of cloud infrastructure like AWS scale-out, AWS availability zone failover, VM Fault Tolerance etc...
Nothing beats application building its own local authentication as a last option.
It's a fact.
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