How do you structure the backend?
Practice this question- Separate identity/validation, AI context and provider adapters, retrieval, safe tools, and domain services.
- Add queues or a graph only when state/recovery demands them.
- Keep business contracts independent of whichever framework coordinates the conversation.
Adapted from 13_AI.MD · “29.20 MERN and AI”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.