Vertical Slice Architecture packages each feature into a self-contained slice — 1 request, 1 handler, 1 data layer, 1 test set. Result: high cohesion, low coupling, and faster, safer evolution of the codebase.
VSA organises code by business feature rather than technical layer, meaning each change is confined to a single, self-contained slice.
This design brings 3 clear advantages: predictable impact, quicker reviews, and safer releases with minimal ripple across the codebase.
Using exceptions for control flow in .NET applications leads to poor performance, unclear code intent, and makes it difficult to distinguish between expected failures and truly exceptional circumstances. The Result pattern provides a clean, explicit way to handle errors without the overhead and complexity of exceptions.