Why should you care?

Enterprise systems rot at messy domain boundaries.

See it live — copy this example

These are architecture exercises: fill templates, draw boxes, write ADRs. No cloud bill required.

# Entities vs Value Objects
Bounded context: ...
Ubiquitous language term: ...
Integration: ACL / events / shared kernel (pick one)

What happened?

• Name the context, language, and integration style.
• Follow the steps below — typing the code yourself is the fastest way to learn.

Practice next

1. Fill the template for your platform or a product you know.
2. State one trade-off explicitly (“we give up X to get Y”).
3. Draw a 5-box diagram on paper.
4. Add a failure mode.
5. Remove one unnecessary component.

Remember

You can explain Entities vs Value Objects simply. You captured a trade-off. You have a tiny artifact (table/diagram/ADR).

Entities vs Value Objects design review

ArchDesk stakeholders challenge your take on entities vs value objects.

Outcome: You defend it with qualities and consequences.