What is a Decision Stack?
A Decision Stack is a five-layer strategic artefact created by Martin Eriksson. It connects vision to daily decisions. Luna uses it as the structure for everything it builds.
The five layers
Vision
One sentence about where the organisation is going. The north star for every decision below.
Strategy
The coherent set of choices that explain how you'll reach the vision. Not a list of goals — a theory of how you win.
Objectives
Measurable outcomes. Each has one metric that matters and an aspiration. Objectives make strategy testable.
Opportunities
Hypotheses with belief statements and success signals. What you actually try to move the objectives.
Principles
Operating guidelines as "X even over Y". The decisions that reveal real priorities under trade-off.
The ten strategic areas
Behind the five layers sit ten areas of strategic context. The decision-stack skill extracts these into a context bundle; Luna uses them to populate the layers.
| Area | What it covers |
|---|---|
| Customer & market | Who buys, why, segments, size, trends |
| Problem & opportunity | What pain or gain, why now, what changed |
| Value proposition | What you offer, why it matters, differentiation |
| Competitive landscape | Alternatives, substitutes, positioning |
| Business model & economics | Revenue model, unit economics, margins, CAC/LTV |
| Go-to-market | Channels, sales motion, distribution, partnerships |
| Product & experience | What it is, how it works, UX, tech |
| Capabilities & assets | Team, IP, tech moat, unfair advantages |
| Risks & constraints | What could go wrong, dependencies, capacity |
| Strategic intent | Vision, ambition, timeline, funding plans |
Why coherence
Strategy fails when thinking scatters. The stack connects every layer to the ones above and below. When a principle conflicts with an objective, you see it.