# DASHBOARD PRINCIPLE

**Decision-Centered Dashboard Design for Landvex**

| | |
|---|---|
| **Version** | 1.0 |
| **Status** | LOCKED |
| **Scope** | All Landvex dashboards |

---

## The Four Questions

Every dashboard must answer:

| # | Question | Example |
|---|----------|---------|
| 1 | **What is happening?** | "Area score dropped to 87" |
| 2 | **Where is it happening?** | "In Nacka municipality" |
| 3 | **How serious is it?** | "Below threshold of 90" |
| 4 | **What do I do now?** | "Inspect area" / "Order report" |

If any question is missing, the dashboard is not complete.

---

## Information Hierarchy

```
LEVEL 1: Score
         (the single most important number)

LEVEL 2: Three most important observations
         (what changed, why it matters)

LEVEL 3: Map
         (where things are happening)

LEVEL 4: History
         (trends over time)

LEVEL 5: Details
         (drill-down for deeper analysis)
```

Not the reverse.

---

## Decision Density

| Screen | Target Decisions | Notes |
|--------|-----------------|-------|
| Onboarding | 1 | "Should I join?" |
| Marketplace | 1 | "Should I register?" |
| Dashboard | 1–3 | "What do I act on?" |
| Report | 1 | "Should I invest/repair?" |

If a dashboard tries to support ten decisions, it needs to be split or restructured.

---

## Not BI

Landvex is not BI.

**Not:** Tables, charts, widgets, KPIs.
**But:** Reality → Understanding → Decision.

The dashboard helps the user make a decision, not consume statistics.

---

## Verification

For every dashboard:
- [ ] Can I understand the situation in 3 seconds?
- [ ] What is today's most important decision?
- [ ] Can I ignore 80% of the information?
- [ ] Is there a primary CTA?
- [ ] Does it answer: What, Where, How serious, What now?

---

## ändringshistoria

| Version | Datum | Beskrivning |
|---------|-------|-------------|
| 1.0 | 2026-07-02 | Initial dashboard principle for Landvex |

---

## STATUS

**LOCKED**

- Mindre revideringar: 1.x-serien
- Brytande ändringar: Kräver Architecture Review, ny major-version (2.0+)