▸ WHAT IT REVEALSOnboarding design, trust-building, expectation-setting.▸ GOOD ANSWER LOOKS LIKEStructured first 30-60-90 plan. Intro to key stakeholders. Clear early wins defined.▸ RED FLAGSThrows them in. Or over-structures and limits their impact early.▸ FOLLOW-UP PROBEWhat's the most common mistake senior hires make in their first 90 days?