Folders

To organize our application, we will create the following folders:

• Controllers
• Data
• Interfaces
• Repositories
• Services

Let’s briefly explain what these are:

• The client is the application calling the API (for example, the website or mobile application). The Controllers folder will hold methods that act as endpoints (an endpoint is what the client connects to via a URL).
• The Data folder will hold the definition of our entities – in our case, the Car object shown earlier.
• The Interfaces folder is just what it sounds like: it will hold the interfaces to our C# objects.
• The Repositories folder will hold the code between our methods and the database calls.
• The Services folder will hold supporting code.

The flow will be as follows:

1. The client calls a method in a controller.
2. The method calls a service to handle the business logic.
3. The service calls a method in the repository, which, in turn,...