I recently watched [a video about separating logic][0] into different categories within your custom code.
It wasn't a PHP video, but the concept applies to any programming language or framework.
This was the final structure of the directories:
```plain
src/
Controllers/
Domain/
Persistence/
Properties/
Services/
```
It was described as using `Controllers` for presentational logic, `Domain` for domain logic, and `Services` for application logic, and reminds me of a domain-driven design (DDD) approach to organising code.
I remember watching other older videos showing separating business and presentational logic in React into different components (if I remember correctly).
This isn't an approach I see in Drupal code, maybe more-so in other PHP framework-based projects like Symfony or Laravel.
It's something I've been thinking of trying, potentially on my website codebase.
Do you organise your code in this or a similar way?
