# What is an Architecture Decision Workspace?

> Canonical: https://decisionpen.com/docs/architecture-decision-workspace  
> Markdown mirror for agents · DecisionPen Docs

## Summary

An Architecture Decision Workspace (ADW) harmonises structured EA entities with unstructured institutional memory (documents, transcripts, rationale) so technology decisions stay grounded in living context.

## ADW vs traditional EA tool

Traditional EA tools optimise strategic inventory. An ADW keeps metamodel structure **and** the How/Why evidence needed for day-to-day decisions across the continuum.

## How DecisionPen helps

DecisionPen is an ADW: metamodel-aware modelling (including LeanIX metamodel support), evidence bound to entities, incremental modelling, Enterprise Ask with citations, and artefact generation from curated context. Not a Visio/BPMN canvas — diagrams are generated from context.

## FAQ

**How is an ADW different from an EA tool?** Structure plus unstructured evidence for decisions, not inventory alone.  
**Why keep unstructured context?** How/Why drives real decisions; without it the map is hollow.