We once passed on a strong candidate over a single answer. They walked us through a production incident they had fixed, cleanly and honestly, but when we asked how they found out it was broken, there was nothing. No alert, no dashboard, no memory of who noticed first.
That gap is the part clients actually feel. Nobody experiences the fix, they experience the hours before anyone knew. So we hire for both halves now, the repair and the noticing, because a team that only knows how to fix things is still waiting on a customer to tell them something is wrong.
It is worth knowing how your own team usually finds out first: a monitor, or a message from a user.