Mapping Between Layers

Mapping translates between DTOs, commands, and domain models.

AutoMapper: Convention-based mapping library that reduces boilerplate.

Manual mapping: Explicit mapping code, clearer for complex transformations.

Keep mapping logic out of domain entities; perform it in the API or application layer.

Architecture impact: Clean mapping boundaries prevent leakage of infrastructure or API concerns into the domain.

Reference:

Microsoft: Mapping in Clean Architecture

https://learn.microsoft.com/dotnet/architecture/modern-web-apps-azure/common-web-application-architectures#mapping