---
title: Business Case Rule Categories
version: 1.0.0
---

# Rule Categories

## 1. ROI & Investment Analysis (business) — HIGH — 1 rule

ROI, NPV, IRR, payback period calculations with Python examples.

- `business-roi.md` — Financial return calculations and investment analysis frameworks

## 2. Cost-Benefit & TCO (business) — HIGH — 1 rule

TCO analysis, build vs buy comparison, sensitivity analysis.

- `business-cost-benefit.md` — Total cost of ownership and build/buy/partner decision frameworks
