In modern SaaS companies, security questionnaires often become a hidden source of delay, jeopardizing deal velocity and compliance confidence. This article introduces an AI‑driven Root Cause Analysis Engine that fuses process mining, knowledge‑graph reasoning, and generative AI to automatically surface the why behind each bottleneck. Readers will learn the underlying architecture, key AI techniques, integration patterns, and measurable business outcomes, empowering teams to turn questionnaire pain points into actionable, data‑backed improvements.