Modern SaaS firms juggle dozens of security questionnaires—[SOC 2](https://secureframe.com/hub/soc-2/what-is-soc-2), [ISO 27001](https://www.iso.org/standard/27001), GDPR, PCI‑DSS, and bespoke vendor forms. A semantic middleware engine bridges these fragmented formats, translating each question into a unified ontology. By combining knowledge graphs, LLM‑powered intent detection, and real‑time regulatory feeds, the engine normalizes inputs, streams them to AI answer generators, and returns framework‑specific responses. This article dissects the architecture, key algorithms, implementation steps, and measurable business impact of such a system.