ddd-subdomain-classification

One-line summary

Classify each subdomain as Core, Supporting, or Generic to direct modeling effort at the parts of the business that actually differentiate it.

When to use this skill

• Scoping a roadmap and deciding which areas deserve deep design.
• Choosing build vs buy for a chunk of functionality.
• Allocating senior engineers across teams.
• Killing scope on a project that is over-investing in plumbing.

When NOT to use this skill

• Within-subdomain modeling questions → tactical pattern skills.
• Drawing context boundaries → ddd-bounded-context.

Core content

Three categories, named for the role they play in the business: