"Success" here means that the sign-in status was still successful (user was allowed) even after processing all CA policies. For each of the "Not applied" policies you can hit the "..." button to see which conditions matched, etc.
Conditional Access

Handian Sudianto
6,101
Reputation points
HI..
Can we know which rule is applied when conditional access is success?
Microsoft Security | Microsoft Entra | Microsoft Entra ID
25,161 questions
Accepted answer
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Vasil Michev 119.7K Reputation points MVP Volunteer Moderator
2022-12-09T08:42:17.683+00:00