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Structuring Projects with .NET Core

Organize your code for maintainability

Posted by Rodrigo Castro on January 17, 2025

A good project structure makes your code easier to maintain and scale.

📁 Typical Structure

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/MySolution
  /MyProject.Api
  /MyProject.Core
  /MyProject.Infrastructure
  /MyProject.Tests
  • Api: Web API entry point, controllers
  • Core: Business logic, domain models, interfaces
  • Infrastructure: Data access, external services
  • Tests: Unit/integration tests

🏗️ Layered Architecture

  • Controllers depend on Core interfaces (not concrete classes)
  • Infrastructure implements Core interfaces

🛡️ Dependency Injection

  • Register services in Startup.cs or Program.cs
  • Use interfaces to decouple layers

🧹 Keep It Clean

  • Avoid circular dependencies.
  • Use clear namespaces and folders.

Next: Developing Web APIs!

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