Vertical Slices in Practice
The article explores implementing vertical slice architecture in practice, organizing code by features rather than technical layers to improve maintainability and developer productivity.
Background
Vertical Slice Architecture is a software design approach that organizes code by business features (e.g., "Place Order" or "Cancel Booking") rather than by technical layers (e.g., Controllers, Services, Repositories). Each slice is self-contained, with its own request handler, logic, and data access. This contrasts with Clean/Hexagonal Architecture and layered architectures, which separate concerns horizontally. Key concepts: avoiding shared base classes/models across slices, using simple request/response objects, and keeping infrastructure concerns (database, queues) out of business logic. The article is aimed at developers familiar with layered or "clean" architecture who are exploring alternatives to reduce coupling and improve maintainability in real-world projects.