# SignalAF Product Architecture

**Status:** Owner-approved product architecture, 2026-08-28

```text
SignalAF — umbrella brand
        ↓
MO§ES™ — constitutional governance and methodology
        ↓
Upsilon — commercial measurement engine and enterprise pilot
        ↓
SigRank — public leaderboard and proof surface
```

## Naming rules

- Use **Upsilon** for the measurement engine, diagnostic product, commercial platform, and 30-day enterprise pilot.
- Use **SigRank** for the public leaderboard, public rankings, profiles, and Reference Field.
- Use **MO§ES™** for constitutional governance, commitment conservation, enforcement, and methodology.
- Use **SignalAF** for the umbrella brand and current application/domain context.
- Use **Yield (Υ)** for `(cache_read × output) / input²`.

## Compatibility boundary

The product-name migration does not rewrite installed packages, tool names, routes, schemas, or stored records. `sigrank/0.1-draft` remains the compatibility wire identifier until a separately approved version migration exists.

## Marketing metaphor and measurement boundary

> Baseline your company's systems intelligence with Upsilon. Get the EKG for how your people process with AI.

The EKG metaphor describes a continuous diagnostic view of observable token-processing rhythm. Upsilon does not, by itself, prove cognition, work quality, employee productivity, or business outcomes. Outcome claims require separately identified evidence and study design.