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---
name: ddd-strategic-design
description: "Design DDD strategic artifacts including subdomains, bounded contexts, and ubiquitous language for complex business domains."
risk: safe
source: rootcastle-rei
tags: [ddd, strategic-design, bounded-context, ubiquitous-language]
---
# DDD Strategic Design
## Use this skill when
- Defining core, supporting, and generic subdomains.
- Splitting a monolith or service landscape by domain boundaries.
- Aligning teams and ownership with bounded contexts.
- Building a shared ubiquitous language with domain experts.
## Do not use this skill when
- The domain model is stable and already well bounded.
- You need tactical code patterns only.
- The task is purely infrastructure or UI oriented.
## Instructions
1. Extract domain capabilities and classify subdomains.
2. Define bounded contexts around consistency and ownership.
3. Establish a ubiquitous language glossary and anti-terms.
4. Capture context boundaries in ADRs before implementation.
If detailed templates are needed, open `references/strategic-design-template.md`.
## Required artifacts
- Subdomain classification table
- Bounded context catalog
- Glossary with canonical terms
- Boundary decisions with rationale
## Examples
```text
Use @ddd-strategic-design to map our commerce domain into bounded contexts,
classify subdomains, and propose team ownership.
```
## Limitations
- This skill does not produce executable code.
- It cannot infer business truth without stakeholder input.
- It should be followed by tactical design before implementation.
---
> 🏰 **Rei Skills** — Curated by [Rootcastle Engineering & Innovation](https://www.rootcastle.com) | Batuhan Ayrıbaş
> Engineering Beyond Boundaries | admin@rootcastle.com
