A US-based mortgage lender has purchased a chatbot.

Offeringloan products based on current offerings and rulesrequires a system that can followexplicit business logic, not generate open-ended content. Anexpert system, which is a rules-based AI that uses “if-then” logic, is ideal here.

From the AI governance context:

“Rule-based AI systems are often preferred when decisions must adhere to precise regulatory or financial criteria.” (aligned with AI best practices in regulated sectors)

A. RAGis used to integrate external knowledge—not suitable for structured, rule-based logic.

B. Multimodal modelshandle varied input types—not needed here.

D. Quantum computingis not yet practical or relevant for this business use case.