Clean Architecture Modules That Do Not Slow Teams Down

Start With Boundaries

Good module boundaries follow product ownership and release risk. A checkout feature should be isolated because it changes independently and carries high business impact.

Suggested Module Shape

:app
:core:ui
:core:network
:core:database
:feature:checkout
:feature:account
:domain:orders
:data:orders

Dependency Direction

Feature modules depend on domain contracts. Data modules implement those contracts and remain replaceable behind interfaces.

Keep Shared Code Boring

Shared modules should be stable and small. Avoid turning core into a place where every unrelated helper lands.

Release Confidence

Modularization pays off when it improves build times, ownership, test isolation, and rollback strategy.