# Package Map

| Package        | Responsibility                                           | Forbidden Dependencies |
|----------------|---------------------------------------------------------|-----------------------|
| controller     | Handle incoming requests, validate input               | service               |
| service        | Business logic, coordination between layers             | repository            |
| repository     | Data access and persistence                             | domain                |
| domain         | Core business models and logic                          | integration           |
| integration     | Interact with external systems, including payment gateways | domain                |