Identity provider token endpoint down
Your SaaS app uses a third-party identity provider (Auth0-style) for all social and SSO login. At 09:05 support reports a flood of 'can't log in' tickets. Dashboards: your login success rate dropped from 99% to 12%; the IdP's token endpoint is returning 500s and its JWKS endpoint is timing out. Existing logged-in sessions are unaffected. You shipped a config change to your IdP tenant 40 minutes ago that rotated a signing key. The IdP's public status page says 'all systems operational.' How do you triage and mitigate?
What a strong answer looks like
Stop the bleeding first (mitigate), then form hypotheses from real signals. Separate root cause from symptom, communicate status as you go, and close with what prevents a repeat.
0:00 of about 40 min
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.