This article explores a novel, ontology‑driven prompt engineering architecture that aligns disparate security questionnaire frameworks such as [SOC 2](https://secureframe.com/hub/soc-2/what-is-soc-2), [ISO 27001](https://www.iso.org/standard/27001), and [GDPR](https://gdpr.eu/). By building a dynamic knowledge graph of regulatory concepts and leveraging smart prompt templates, organizations can generate consistent, auditable AI answers across multiple standards, reduce manual effort, and improve compliance confidence.