Vertical Slice Architecture: A Balanced Evaluation

Introduction Vertical Slice Architecture (VSA) is a feature-oriented architectural style that structures applications around use cases rather than technical layers. It is particularly popular in modern .NET development, often combined with tools like MediatR and minimal APIs. This article provides an objective assessment of VSA, outlining both its strengths and its trade-offs so you can make an informed architectural decision. What is Vertical Slice Architecture? Vertical Slice Architecture organizes code by feature (or "slice"), where each slice contains everything required to fulfill a specific use case: Endpoint or controller Business logic Validation Data access Example structure: /Features /Orders CreateOrder.cs GetOrder.cs UpdateOrder.cs Each slice is intended to be independent and self-contained. Advantages of Vertical Slice Architecture 1. Feature-Centric Organization Code is grouped by business capability rather than technical concern. This aligns well with how product teams t