---
auto_generated: true
title: Concepts
path: concepts
status: published
---

# Concepts

Core ideas worth modelling before you write code. Each topic is self-contained — skim the one you need.

- **[Architecture](/docs/scaigrid/scaipersona/concepts/architecture)** — How the persona, the request enricher, ScaiMatrix, ScaiDrive, and the inference pipeline fit together.
- **[RAG strategies](/docs/scaigrid/scaipersona/concepts/rag-strategies)** — Three retrieval strategies — single_step, multi_step, agentic — when to use each, and how source weights, top-k, and min-score interact.