Vertical Slice Architecture (VSA)

VSA, Feature Slices

Each feature is organized as an end-to-end slice spanning all layers (request, validation, domain logic, persistence, API)

Code for a feature lives together regardless of technical layer

Avoids traditional layered architecture (controllers, services, repositories) as primary organizing principle

Naturally pairs with Command/Query separation per slice

Minimal shared infrastructure; each slice owns its behavior

Folder/namespace structure reflects features, not technical concerns

Slices can evolve independently with minimal cross-cutting changes

Changes to one feature rarely affect other features

Jimmy Bogard